JAVA PRATICAL SOLUTION BCA FINAL YEAR CHRIST COLLEGE JAGDALPUR

Java particle record 2011

Nitesh Bhura 1

Q1. Write a program that implements the concept of Encapsulation? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\encapsulation.java System No : L1S1 Date : 18/08/09 ******************************************************************/ Coding: class encapsulation //Class Declaration { public void print() //Print Method Defined { System.out.println("JAVA PROGRAM FOR ENCAPSULATION"); } public static void main(String[] args) //Main Method { int i=5, j=6; //Variable Declaration System.out.println("When i = 5 & j = 6 then i + j = " + i+j + "."); encapsulation gul =new encapsulation(); gul.print(); }

} Output :


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Q2. Write a program to demonstrate concept of polymorphism (Overloading and Overridden)? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\polymorphism.java System No : L1S7 Date : 19-08-2010 ******************************************************************/ Coding: import java.io.DataInputStream; //Package Declaration class polymorphism //Class Declaration { static DataInputStream x = new DataInputStream(System.in); public static void main(String[] args) //Main Method { System.out.print("Enter 1st no. = "); //To Enter a no. try //Try Exception Starts { int i = Integer.parseInt(x.readLine()); System.out.print("\nEnter 2nd no. = "); int j = Integer.parseInt(x.readLine()); sub s = new sub(); //creating object of class sub String s1 = new String(); //1st string declaration String s2 = new String(); //2nd string declaration System.out.print("\nEnter 1st String = "); s1 = x.readLine(); System.out.print("\nEnter 2nd String = "); s2 = x.readLine(); //overloading s.add(i,j); //passing int val s.add(s1,s2); //passing string val


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} catch(Exception a) { } } } class sub //Sub Class Declared { public void add (int a,int b) //Method Declaration { System.out.print("\nAddition of entered number's = " + (a+b)); } public static void add (String a, String b) { System.out.print("\n\nAddition of entered string's = " + (a+b)); } };

Output :


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Q3. Write a program the use Boolean data type and print the prime number series up to 50? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\prime.java System No : L1S7 Date : 19-08-2010 ******************************************************************/ Coding: class prime //Class Declaration { public static void main(String[] args) //Main Method { boolean b; //Variable Declaration System.out.println("Prime Number's in between 1 to 30 :"); for (int i=1;i<=30 ;i++ ) //For Loop Starts { b = false; for (int j=2;j<i ;j++ ) //Inner For Loop { if (i % j == 0) //If Statement { b = true; break; } } if (b == false) { System.out.println(+ i); //Print Statement } } } }


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Output :


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Q4. Write a program for matrix multiplication using I/O stream? /****************************************************************** Unit No. : 4 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ multiplication_of_matrix.java System No : L1S7 Date : 19-08-2010 ******************************************************************/ Coding: import java.io.DataInputStream; //Package Declaration class multiplication_of_matrix //class Decalaration { static DataInputStream x= new DataInputStream(System.in); public static void main(String[] args) //Main method { int n1[][]=new int [3][3]; //1st array declaration int n2[][]=new int [3][3]; //2nd array declaration try { System.out.println("enter value of 1st matrix : "); for(int i=0;i<=2;i++) { for(int j=0;j<=2;j++) { n1[i][j]=Integer.parseInt(x.readLine()); //Entering value of 1st matrix n1 } } System.out.println("enter value of 2nd matrix : "); for(int i=0;i<=2;i++) { for(int j=0;j<=2;j++) { n2[i][j]=Integer.parseInt(x.readLine()); //Entering value of 2nd matrix n2 } } }


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catch(Exception e) //Catch Exception Starts { } System.out.println("1st matrix is = \n"); for(int i=0;i<=2;i++) { for(int j=0;j<=2;j++) { System.out.print(n1[i][j] + "\t"); //showing value of 1st matrix n1 } System.out.println(); } System.out.println("2nd matrix is = \n"); for(int i=0;i<=2;i++) { for(int j=0;j<=2;j++) { System.out.print(n2[i][j] + "\t"); //showing value of 2nd matrix n2 } System.out.println(); } System.out.println("multiplication of both matrix = \n"); for(int i=0;i<=2;i++) { for(int j=0;j<=2;j++) { int total = 0; for (int mul=0;mul<=2 ;mul++ ) { total= total + n1[i][mul] * n2[mul][j] ; //multilication of both matrix } System.out.print(total + "\t"); } System.out.println();


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} } } Output :


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Q5. WAP to add the element of Vector as arguments of main method (Run time) and rearrange them, and copy it into an Array? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ System No : L1S7 Date : 25-08-2010 ******************************************************************/ Coding: import java.util.*; import java.io.*; import java.lang.*; class vector { public static void main(String args[]) throws IOException { Vector v = new Vector(); DataInputStream in = new DataInputStream(System.in); int i,n,s; String g; System.out.println("Enter 5 element in vector : "); for(i=0;i<5;i++) { g=in.readLine(); v.addElement(g); } s=v.size(); String a[]=new String[s]; System.out.println("size is="+s); v.copyInto(a);


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System.out.println("print element"); for(i=0;i<5;i++) { System.out.println(a[i]); } } }

Output:-


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Q6. Write a program to check that the given string is palindrome or not? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\palindrome.java System No : L1S7 Date : 25-08-2010 ******************************************************************/ Coding: import java.io.*; import java.lang.*; //Package Declaration class palindrome //Class Daclaration { static DataInputStream x = new DataInputStream(System.in); public static void main(String[] args) { System.out.print("Enter a string to Check weather it is palindrome or not : "); String str = new String(); String str1 = new String(); try //Try Exception Starts { str = x.readLine().trim(); //To Enter a string int len = str.length(); int a=0,total = 0; for (int i=len -1;i>=0 ;i-- ) //For loop { if (str.charAt(i) == str.charAt(0+a)) { total+=1; } a++; } if (total == len) //If else Statement


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{ System.out.println(" The Entered string "+str+" is a palindrom "); } else { System.out.println("Entered string "+str+" is not a palindrom "); } } catch(Exception a) //Catch Exception Starts { } } }


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Output:-


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Q7. Write a program to arrange the string in alphabetical order? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\sort.java System No : L1S7 Date : 27-08-2010 ******************************************************************/ Coding: import java.io.DataInputStream; //Package Declaration class sort //Class Declaration { static DataInputStream x= new DataInputStream(System.in); public static void main(String[] args) { try //Try Exception Starts { String str[] = new String[50]; String temp = null ; System.out.print("How many Strings you wants to enter :> "); int n= Integer.parseInt(x.readLine()); for (int i=0;i<n;i++ ) //For loop starts { System.out.print("\nEnter String no. " + (i+1) +" :> "); str[i] = x.readLine(); } for (int j=0; j<n ;j++ ) //For loop starts { for (int i=0;i<n-1;i++ ) //For Loop Starts { if (str[i].compareTo(str[i+1]) > 0) //If Statement { temp = str[i];


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str[i] = str[i+1] ; str[i+1] = temp; } } } System.out.print("\nSorted Strings are ::\n"); for (int i=0;i<n;i++ ) //For loop Starts { System.out.println(i+1 + ") " + str[i]); } } catch(Exception a ) { } } } Output :


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Q.8 WAP for string Buffer Class which perform the all method of that class? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\stringBuffer.java System No : L1S7 Date : 27-08-2010. ******************************************************************/ Coding: class stringBuffer //Class Declaration { public static void main(String args[]) //Main Method { StringBuffer str=new StringBuffer("Nitesh Bhura"); System.out.println("original string : "+str); //obtaining length System.out.println("Length of string" +str.length()); //Accessing characters in a string for (int i=0;i<str.length();i++) { int p=i+1; System.out.println("Character at position : " + p + " is " + str.charAt(i)); } //Inserting string in the middle String aString = new String(str.toString()); int pos=aString.indexOf(" Bhura"); str.insert(pos," Nitesh"); System.out.println("Modified string "+ str); //Modifying characters


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str.setCharAt(9, ' '); System.out.println("String now : " + str); //Appending a string at the end str.append(" is my name."); System.out.println("Appending string : " +str); } }

Output :


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Q9. Write a program to calculate simple interest using the Wrapper class? /****************************************************************** Unit No. : 1 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ Simple_Interest.java System No : L1S7 Date : 27-09-2010 ******************************************************************/ Coding: import java.io.DataInputStream; //Package Declaration class Simple_Interest //class declaration { static DataInputStream x = new DataInputStream(System.in); public static void main(String[] args) { try //Try Exception Starts { float p,r,t; System.out.print("Enter Principal :> "); p = Float.parseFloat(x.readLine());//Input Principal System.out.print("Enter Rate :> "); r = Float.parseFloat(x.readLine()); //Input Rate System.out.print("Enter Time in month :> "); t = Float.parseFloat(x.readLine()); //Input Time System.out.print("Simple Interest :> " + ((p * r * t)/100)); //Output Simple Interest } catch(Exception a) //Catch Exception { } } }


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Output :


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Q10. Write a program to calculate area of various geometrical figures using the abstract class? /****************************************************************** Unit No. : 2 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\area.java System No : L1S7 Date : 30-09-2010 ******************************************************************/ Coding: abstract class figure //Figure Abstract class Declaration { double dim1; double dim2; //Variable Declarations figure(double a,double b) //Parameter Constructor { dim1 = a; dim2 = b; } abstract double area(); } class rectangle extends figure //Rectangle class Declaration { rectangle(double a,double b) //Constructor Declared { super(a,b); } double area() //Method for Area calculation { System.out.println("Inside area of Rectangle."); return dim1 * dim2; } }


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class triangle extends figure //Triangle class Declared { triangle(double a,double b) //constructor Declared { super(a,b); } double area() //Method Declared { System.out.println("Inside area of Triangle."); return dim1 * dim2/2; } } class area //Main class Declaration { public static void main(String[] args) //main method { rectangle r = new rectangle(8,9); //objects Declared triangle t = new triangle(2,2); figure f; f = r; System.out.println("Area is :> " + f.area()); f = t; System.out.println("Area is :> " + t.area()); } }

Output :


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Q11. Write a program where single class implements more than one interfaces and with help of interface reference variables user call the method? /****************************************************************** Unit No. : 2 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\main.java System No : L1S7 Date : 04-09-2010 ******************************************************************/ Coding: class main //Main class Declared { public static void main(String[] args) //Main class { sub a = new sub(); //creating object for interface 1st a.sub11(6); //passing value to interface 1st sub b = new sub(); //creating object for interface 2nd b.sub22(8); //passing value to interface 2nd } } class sub implements sub1,sub2 //class that implements interface { public void sub11(int p) { System.out.print("In 1st interface "); System.out.println("P = " + p); } public void sub22(int p) { System.out.print("In 2nd interface "); System.out.println("P = " + p * p);


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} } interface sub1 //interface 1st { void sub11(int y); //calling the mathod sub1 in class sub } interface sub2 //interface 2nd { void sub22(int y); //calling the mathod sub2 in class sub }

Output :


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Q12. Write a program that uses multiple catch statements within the try-catch mechanism? /****************************************************************** Unit No. : 3 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ multiple_exception.java System No : L1S7 Date : 08-09-2010. ******************************************************************/ Coding: class NewThread implements Runnable { String name; Thread t; NewThread(String threadname) { name=threadname; t=new Thread(this, name); System.out.println("New thread = "+t); t.start(); } public void run() { try { for (int i=5;i>0 ;i-- ) { System.out.println(name+" : "+i); Thread.sleep(1000); } }


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catch (InterruptedException e) { System.out.println(name+ "interrupted."); } System.out.println(name+"exiting"); } } class DemoJoin { public static void main(String[] args) { NewThread ob1 = new NewThread ("One"); NewThread ob2 = new NewThread ("Two"); NewThread ob3 = new NewThread ("Three"); System.out.println("Thread One Is alive() : "+ob1.t.isAlive()); System.out.println("Thread One Is alive() : "+ob2.t.isAlive()); System.out.println("Thread One Is alive() : "+ob3.t.isAlive()); try { System.out.println("waiting for threads to finish"); ob1.t.join(); ob2.t.join(); ob3.t.join(); } catch (InterruptedException e) { System.out.println("main thread is interrupted"); } System.out.println("Thread one is alive()"+ob1.t.isAlive()); System.out.println("Thread one is alive()"+ob2.t.isAlive()); System.out.println("Thread one is alive()"+ob3.t.isAlive()); System.out.println("Main thread existing"); } }


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OUTPUT:-

Q13. Write a program where user will create a self Exception using the “throw” keyword?


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/****************************************************************** Unit No. : 3 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\NeoRocks.java System No : L1S7 Date : 08-09-2010. ******************************************************************/ Coding: class TestMyException { public static void main(String[] args) { int x=5,y=5000; try { float z=(float) x / (float) y; if(z<0.01) { throw new MyException("Number is too Small"); } } catch (MyException e) { System.out.println("Caught My Exception"); System.out.println(e.getMessage()); } finally { System.out.println("WELCOME TO JAVA WORLD!"); } } }

Output :


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Q14. Write a program to create a package using command and one package will import another package?


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/****************************************************************** Unit No. : 2 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ mainclass.java System No : L1S7 Date : 10-09-2010 ******************************************************************/ Coding: //Main program package test; public class classa { public void disp(int n) { int x,fact=1; for (x=1;x<=n ;x++ ) { fact=fact*x; } System.out.println("Factorial : "+fact); } } -------------------------------------------------------------------------------------------------------------- //calling the package import test.classa; class trial { public static void main(String[] args) { classa A=new classa(); A.disp(5); }


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} Output:

Q15. WAP for multithread using theisAlive ( ), join ( ), Synchronized ( ) method of Thread class?


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/****************************************************************** Unit No. : 03 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ karamkey.java System No : L1S7 Date : 11-01-2011 ******************************************************************/ Coding: class NewThread implements Runnable { String name; Thread t; NewThread(String threadname) { name=threadname; t=new Thread(this, name); System.out.println("New thread = "+t); t.start(); } public void run() { try { for (int i=5;i>0 ;i-- ) { System.out.println(name+" : "+i); Thread.sleep(1000); } } catch (InterruptedException e) { System.out.println(name+ "interrupted.");


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} System.out.println(name+"exiting"); } } class DemoJoin { public static void main(String[] args) { NewThread ob1 = new NewThread ("One"); NewThread ob2 = new NewThread ("Two"); NewThread ob3 = new NewThread ("Three"); System.out.println("Thread One Is alive() : "+ob1.t.isAlive()); System.out.println("Thread One Is alive() : "+ob2.t.isAlive()); System.out.println("Thread One Is alive() : "+ob3.t.isAlive()); try { System.out.println("waiting for threads to finish"); ob1.t.join(); ob2.t.join(); ob3.t.join(); } catch (InterruptedException e) { System.out.println("main thread is interrupted"); } System.out.println("Thread one is alive()"+ob1.t.isAlive()); System.out.println("Thread one is alive()"+ob2.t.isAlive()); System.out.println("Thread one is alive()"+ob3.t.isAlive()); System.out.println("Main thread existing"); } }

Output :


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Q16. Write a program for Applet that handles the keyboard event? /******************************************************************


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Unit No. : 05 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ karamkey.java System No : L1S7 Date : 11-01-2011 ******************************************************************/ Coding: import java.awt.*; import java.awt.event.*; import java.applet.*; /* <applet code = simpelkey .class width=400 height=400> </applet> */ public class simpelkey extends Applet implements KeyListener { String msg="Hellow "; int x=10,y=20; public void init() { addKeyListener(this); requestFocus(); } public void keyPressed(KeyEvent ke) { showStatus("KeyDown"); } public void keyReleased(KeyEvent ke) { showStatus("Keyup"); } public void keyTyped(KeyEvent ke) {


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msg+=ke.getKeyChar(); repaint(); } public void paint(Graphics g) { g.drawString(msg,x,y); } }


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Output :


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Q17. Write a program for JDBC to insert the values into the existing table by using prepares statement? /****************************************************************** Unit No. : 4 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ MyDbTest1.java System No : L1S7 Date : 23-01-2011 ******************************************************************/ Coding: import java.lang.*; import java.sql.*; import java.io.*; //Package Declarations class MyDbTest1 //Class Declared { public static void main(String[] args) throws Exception { String Eno,EName; Connection con=null; PreparedStatement stmt; ResultSet Rs; int x; //Variables Declared try //Try Exception Statement { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); con=DriverManager.getConnection("jdbc:odbc:MYDSN","scott","tiger"); //Entering records into the emp stmt=con.prepareStatement("insert into emp(empno,ename) values (113,'Naveen')"); x=stmt.executeUpdate();


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//Updating records of the emp stmt=con.prepareStatement("update emp set ename='Aditi' where empno=111"); x=stmt.executeUpdate(); //Now reading the records of the emp stmt=con.prepareStatement("Select * from emp"); Rs=stmt.executeQuery(); while(Rs.next()) { Eno=Rs.getString(1); EName=Rs.getString(2); System.out.println(Eno+" "+EName); } stmt.close(); con.close(); } catch(Exception e) //Catch Exception { System.out.println("Exception is : "+e.getMessage());//Print Statement } } }


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Output :


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Q18. Write a program for JDBC to display the record form the existing table? /****************************************************************** Unit No. : 4 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ MyDbTest.java System No : L1S7 Date : 23-01-2011 ******************************************************************/ Coding: import java.lang.*; import java.sql.*; import java.io.*; //Package Declarations class MyDbTest //Declared Class { public static void main(String[] args) throws Exception { String Eno,EName; Connection con=null; PreparedStatement stmt; ResultSet Rs; //Variable Declarations try //Try Exception { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

con=DriverManager.getConnection("jdbc:odbc:MYDSN","s

cott","tiger"); stmt=con.prepareStatement("Select * from emp"); Rs=stmt.executeQuery(); while(Rs.next()) { Eno=Rs.getString(1); EName=Rs.getString(2);


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System.out.println(Eno+" "+EName); } stmt.close(); con.close(); } catch(Exception e) //Catch Exception Statement {

System.out.println("Exception is : "+e.getMessage()); //Print Statement

} } }

Output :


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Q19. Write a program to demonstrate the border layout using applet? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ BorderLayoutDemo.java System No : L1S7 Date : 16-01-2011 ******************************************************************/ Coding: import java.awt.*; import java.applet.*; //Packages Declararions import java.util.*; /* <applet code="BorderLayoutDemo" width=400 height=200> </applet> */ //HTML Coding public class BorderLayoutDemo extends Applet { public void init() //Method declared { setLayout(new BorderLayout());

add(new Button("this is across the top."),BorderLayout.NORTH);

add(new Label("the footer message might go here.") ,BorderLayout.SOUTH);

add(new Button("Right"),BorderLayout.EAST); add(new Button("Left"),BorderLayout.WEST);


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String msg="The six colors " + ", including the white background;\n" + "represents the colours of all the World's flags..." + "this is a true \n" + "international emblem. " + " - Peirre de Coubertin\n\n"; //To insert text in form

add(new TextArea(msg),BorderLayout.CENTER); } }

Output :


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Q20. Write a program for Applet who generates the mouse motion listener event? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ App.java System No : L1S7 Date : 18-01-2011 ******************************************************************/ Coding: import java.applet.*; import java.awt.*; import java.awt.event.*; /* <applet code =freedraw.class width=400 height=400> </applet> */ public class freedraw extends Applet implements MouseMotionListener { int x,y; public void init() { setLayout(new GridLayout(5,2)); x=0; y=0; addMouseMotionListener(this); } public void mouseDragged(MouseEvent me) { x=me.getX(); y=me.getY(); repaint(); } public void mouseMoved(MouseEvent me) { } public void update(Graphics g)


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{ paint(g); } public void paint (Graphics g) { g.fillOval(x,y,5,5); } }

Output:


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Q21. Write a program for display the checkbox, labels and text fields on an AWT? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ Karamyo.java System No : L1S7 Date : ******************************************************************/ Coding: import java.awt.*; import java.applet.*; /*<applet code=label.class height=400 width=400></applet>*/ public class label extends Applet {

CheckboxGroup cb; Checkbox cb1,cb2; List L; TextField p,q; TextArea ta; Choice c; public void init() { //creating label obj Label x=new Label("CCJ"); Label y=new Label("JDP"); add(x); add(y); //creating combo obj and elements to combo c=new Choice(); c.add("BCA");


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c.add("BBA"); c.add("BSC"); c.add("MA"); c.add("BA"); c.add("PHD"); add(c); //creating option button cb=new CheckboxGroup(); cb1=new Checkbox ("Graduate",cb,true); cb2=new Checkbox ("Post Graduate",cb,false); add(cb1); add(cb2); //creating list box L=new List(1,true); L.add("BCA"); L.add("PGDCA"); L.add("BBA"); L.add("M.COM"); L.add("B.COM"); L.add("BA"); add(L); //creating textbox and textfeilds p=new TextField(10); q=new TextField(10); q.setEchoChar('*'); add(p); add(q); //creating text area String s="a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z"; ta=new TextArea(s,10,30); add(ta); } }


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OUTPUT:


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Q22. Write a program for creating a file and to store data into that file.(Using the file Writer IO stream)? /****************************************************************** Unit No. : 4 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ System No : L1S7 Date : 22-04-2010 ******************************************************************/ Coding: import java.io.*; //Package Declaration class copycharacters //Main class declared { public static void main(String[] args) //Main Method { //Declare ad create input and output files File inFile = new File("input.dat"); File outFile = new File("output.dat"); FileReader ins =null; FileWriter outs=null; try //Try Exception { ins = new FileReader("inFile"); outs=new FileWriter("outFile"); //Read and write till the end int ch; while ((ch=ins.read())!=-1) { outs.write(ch); }


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} catch (IOException e) //Catch Exception { System.out.println("File created"); System.out.println("NiteshIoFile"); System.exit(-1); } finally { try { ins.close(); //close files outs.close(); } catch(IOException e) { } } } } Output :


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Q23. Write a program to create an Applet using the HTML file, where Parameter pass font size and font type and Applet msg. will change to corresponding parameter? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ PassParam.java System No : L1S7 Date : 16-01-2011 ******************************************************************/ Coding: import java.awt.*; import java.applet.*; // Package Declarations /* <applet code = "PassParam" width =200 height = 80> <param name=fontName value=Karamveer> <param name=fontSize value=18> <param name=leading value=4> <param name=accountEnabled value=true> </applet>*/ //Applet Coding in HTML public class PassParam extends Applet //Class Declaration { String fontName; //Variable Declarations int fontSize; float leading; boolean active; public void start() //Start Mathod { String Param; //Variable Declaration fontName = getParameter("fontName"); if (fontName == null) //if Statement


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fontName = "Not Found"; Param = getParameter ("FontSize"); try //Try catch Exception Statement { if (Param !=null ) //if else statement fontSize = Integer.parseInt (Param); else fontSize = 0 ; } catch (NumberFormatException E) { fontSize = -1; } Param = getParameter("Leading"); try //try catch Exception { if (Param != null) //if else statement leading = Float.valueOf (Param).floatValue(); else leading = 0; } catch (NumberFormatException e) { leading =-1; } Param = getParameter("Account Enabled"); if (Param != null) active = Boolean.valueOf (Param).booleanValue(); } public void paint(Graphics G) //Paint Method { G.drawString("FontName = " + fontName,0,10); G.drawString("FontSize = " + fontSize,0,26); G.drawString("Leading = " + leading,0,42); G.drawString("AccountActive = " + active,0,58);


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} }

Output :


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Q24. Write a program for AWT to create Menu and Popup Menu for Frame? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ MenuDemo.java System No : L1S7 Date : 02-01-2011 ******************************************************************/ Coding: import java.awt.*; import javax.swing.*; //Importing Packages and classes import javax.swing.event.*; public class MenuDemo extends JFrame //class name { public MenuDemo() //Constructor Declaration { JMenuBar mb1=new JMenuBar(); //Declare he object and Instantiate the object setJMenuBar(mb1); JMenu m1=new JMenu("File"); //Statement for File menu JMenu m2=new JMenu("Edit"); //Statement for Edit menu JMenu m3=new JMenu("Search"); //Statement for Search menu JTextArea ta=new JTextArea(); mb1.add(m1); mb1.add(m2); mb1.add(m3); m1.add(new JMenuItem("New",new ImageIcon("new.jpg"))); //Popup for File menu m1.add(new JMenuItem("Open",new ImageIcon("open.jpg")));

m1.add(new JMenuItem("Save",new ImageIcon("save.jpg")));


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m1.addSeparator(); //Inserts line to separate m1.add(new JMenuItem("Page Setup",new ImageIcon("pagesetup.jpg"))); m1.add(new JMenuItem("Print",new ImageIcon("print.jpg"))); m2.add(new JMenuItem("Undo",new ImageIcon("Undo.jpg"))); //Popup for Edit menu m2.add(new JMenuItem("Redo",new ImageIcon("redo.jpg"))); m2.addSeparator(); //Inserts line m2.add(new JMenuItem("Cut",new ImageIcon("cut.jpg"))); m2.add(new JMenuItem("Copy",new ImageIcon("copy.jpg"))); m2.add(new JMenuItem("Paste",new ImageIcon("paste.jpg"))); m3.add(new JMenuItem("Find",new ImageIcon("find.jpg"))); //Popup for Search menu this.getContentPane().add(ta); } //Closing Constructor public static void main(String str[]) // Main emthod Declaration { MenuDemo md1=new MenuDemo(); // Calling of MenuDemo class md1.setVisible(true); md1.setSize(300,300); }


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Output :


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Q24. WAP to create an Applet using the HTML file where parameter pass for font size and font type and applet message will change to corresponding parameters ? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ MenuDemo.java System No : L1S7 Date : 02-01-2011 ******************************************************************/ Coding: import java.awt.*; import java.applet.*; /* <applet code = PassParam.class width =300 height = 300> <param name=fontName value=Lucida> <param name=fontSize value=14> <param name=leading value=2> <param name=accountEnabled value=true> </applet>*/ public class PassParam extends Applet { String fontName; int fontSize; float leading; boolean active; public void start() { String Param; fontName = getParameter("fontName"); if (fontName == null) fontName = "Not Found";


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Param = getParameter ("FontSize"); try { if (Param !=null ) fontSize = Integer.parseInt (Param); else fontSize = 0 ; } catch (NumberFormatException E) { fontSize = -1; } Param = getParameter("Leading"); try { if (Param != null) leading = Float.valueOf (Param).floatValue(); else leading = 0; } catch (NumberFormatException e) { leading =-1; } Param = getParameter("Account Enabled"); if (Param != null) active = Boolean.valueOf(Param).booleanValue(); } public void paint(Graphics G) { G.drawString("FontName = " + fontName,0,10); G.drawString("FontSize = " + fontSize,0,26);

G.drawString("Leading = " + leading,0,42); G.drawString("AccountActive = " + active,0,58); } }


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Output:

To Write


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Q25. WAP to display your file in DOS console use the input /output stream? /****************************************************************** Unit No. : 5 Author : Nitesh Bhura Class : BCA III rd year Path : C:\java\ MenuDemo.java System No : L1S7 Date : 02-01-2011 ******************************************************************/ Coding: import java.io.*; class FileWriteChar { public static void main(String[] args) throws IOException { String s="Welcome to JAVA world"; FileWriter fw=new FileWriter("msg.txt",true); char ch[]=s.toCharArray(); fw.write(ch); fw.close(); } } import java.io.*; class FileReadChar { public static void main(String[] args) throws IOException { FileReader fr=new FileReader("msg.txt"); String s="";


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int i=fr.read();// assigning first character of file //fr.read() will return ascii code of characters in the file while(i!=-1)// upto last character whose ascii value is -1 { char ch=(char)i; s=s+ch; i=fr.read(); } System.out.println(s); fr.close(); } } OUTPUT

JAVA PRATICAL SOLUTION BCA FINAL YEAR CHRIST COLLEGE JAGDALPUR

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