CSE Lab Manuals Java

Haryana Engineering College

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Experiment Instructions Issue : 01

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INDEX(Advanced Technology+CODE)

Sr. Number

Name of Experiment Document No.

1Learn basics of java language and its development tools/libraries.

HEC/CE/CSE

2Write a program in java using command line arguments.

HEC/CE/CSE

3Create an editor screen containing menus, dialogue boxes using java .

HEC/CE/CSE

4Write a program in java showing exception handling.

HEC/CE/CSE

5

Create an applet with a text field and three buttons when you press each button make some different text appear in the text field.

Add a check box to the applet created,capture the event and insert different text into the text field

HEC/CE/CSE

6 Write a program to find the volume of a box HEC/CE/CSE

7Write a multithreaded program to print “Hello Thread” ten times.

HEC/CE/CSE

Originated /Reviewed By:

Approved by: Revision No Revision Date: Effective Date

Ashna SharmaPriya AggarwalShefali Garg


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AIM : Learn basics of java language and its development tools/libraries

SCOPEPROCEDURE:

JAVA is first and foremost an object oriented programming language.Many programmers were surprised when they discovered how easy it is to follow sound object oriented design practices with java.The following sections give you a better understanding of what java offers .

Characteristics of javaCharacteristics of java are very easy to understand. Java has advanced object oriented capabilities are they are very powerful.Some of the characteristics are:Architecture-neutral Distributed Interpreted and compiledMultithreaded Network-ready and compatibleObject-oriented PortableRobust SecureViewing





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AIM:Program to calculate the volume of the box.

class box{ double width; double height; double depth;

box(box ob){ width=ob.width; height=ob.height; depth=ob.depth;}

box(double w,double h,double d){ width=w; height=h; depth=d;}

box(){ width=-1; height=-1; depth=-1;}





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box(double len){ width=height=depth=len;}

double volume(){ return width*height*depth;}}

class boxweight extends box{ double weight;

boxweight(double w,double h,double d,doublew m){ width=w; height=h; depth=d; weight=m;}

}

class demoboxweight{ public static void main(String args[]){ boxweight mybox1=new boxweight(10,20,15,34.3); boxweight mybox2=new boxweight(2,3,4,0.076);





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double vol1; vol1=mybox1.volume(); System.out.println("volume of mybox1 is"+vol1); System.out.println("volume of mybox1 is"+mybox.weight); System.out.println();

vol1=mybox2.volume();System.out.println("volume of mybox2 is"+vol1);System.out.println("volume of mybox2 is"+mybox2.weight);}}





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AIM: Program to create an applet with a textfield and three buttons.When you press each button, make some text appear in the textfield . Add a check box to applet created ,capture the event and insert different text in textfield.

CODING:

import java.awt.*;import java.awt.event.*;import java.applet.*;

public class MyApplet extends Applet implements ActionListener,ItemListener { TextField t; Button b1,b2; checkbox c;

public void init() { t=new TextField(20); b1=new Button("one"); b2=new Button("two"); c=new Checkbox("Check");

add(t); add(b1); add(b2);





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add(c);

b1.addActionListener(this); b2.addActionListener(this); c.addItemListener(this); }

public void actionPerformed(ActionEvent ae) { if(ae.getActionCommand()=="one")

t.setText("pressed button one");

else if(ae.getActionCommand()=="two")t.setText("pressed button two");

}

public void itemStateChanged(ItemEvent ie) { if(c.getState()==true) t.setText("u pressed chechbox"); }}





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AIM: Write a program in Java using COMMAND LINE ARGUMENTS

SCOPE

CODING:

class text{ public static void main(String args[ ]) { int count,I=0; String str; count=args.length; System.out.println(“No. of arguments= “+count); while(I<count) { str=args[i]; i=i+1; System.out.println(I+ “argument is “+str); } }}

INPUT

java test One Two Three

OUTPUT





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No. of arguments=31 argument is One2 argument is Two3 argument is Three

AIM: Write a program in Java using COMMAND LINE ARGUMENTS

SCOPE

CODING:

public class Example2 { public static void main(String args[ ]) { int i=1,j=0,k; try { k=i/j; } catch (ArithmeticException ae) { System.out.println(“Division by zero,illegal operator); } System.out.println(“Hello World”); }}

INPUT





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OUTPUT

Division by Zero,illegal operationHello World

AIM: Write a multithreaded program in Java to print “Hello Thread2” ten times.

SCOPE

CODING:

class ExampleThread1 extends Thread { public void run() { for (int i=0;i<10;i++) { System.out.println(“Hello Thread1”); } }

class ExampleThread2 extends Thread { public void run() { for(int i=0;i<10;i++) { System.out.println(“Hello Thread2”); } } }

public class Example1





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{ public Static void main(String args[ ]) { ExampleThread1 t1=new ExampleThread1(); ExampleThread2 t2=new ExampleThread2(); T1.start(); T2.start(); } }

INPUT

OUTPUT

HelloThread1HelloThread2HelloThread2HelloThread2HelloThread2HelloThread1HelloThread1HelloThread1HelloThread1HelloThread2HelloThread2HelloThread2HelloThread1




Documents

CSE Lab Manuals Java