Narayan Gopal Maharjan

Polymorphism on three classes

by Narayan Gopal Maharjan
October 22, 2008January 31, 2012
2 Comments

This Polymorphism is one of the special feature of OOPL(Object oriented Programming Language). The polymorphism can perform several functions with a single method. A simple example of Polymorphism is given below according to real world.

fig. Polymorphism in real world

The term polymorphism refers to the ability of two or more objects belonging to different classes to respond to exactly the same message (method call) in different class-specific ways.Read More »Polymorphism on three classes

Small Applet

by Narayan Gopal Maharjan
August 30, 2008January 31, 2012

[sourcecode=’java’] //import directives import javax.swing.*; public class HelloJava { //main method public static void main( String[] args ) { JFrame frame = new JFrame( “Hello… Read More »Small Applet

Using Switch

by Narayan Gopal Maharjan
August 30, 2008January 31, 2012
4 Comments

Switch is mostly useful while we are making any menu-driven program and we can use switch even for many other purposes. Here I’m going to… Read More »Using Switch

Converting Number System

by Narayan Gopal Maharjan
August 23, 2008July 28, 2012

    public static void main(String[] args) {
        int binary = 4;
        int  hexadecimal = 43;

        //Convert the integer to binary. Stored in String.
        String bin =  Integer.toBinaryString(binary);
        System.out.println(binary + " as binary: " +  bin);

        //Convert the second integer into hex. Stored in String.
        String hex =  Integer.toHexString(hexadecimal);
        System.out.println(hexadecimal + " as hex:  " + hex);

        //To convert back, parse the String with base 2  (binary).
        System.out.println(bin + " as integer: " + Integer.parseInt(bin,  2));

        //Hexadecimal is base-16, so pass in 16 as base.
        System.out.println(hex +  " as integer: " + Integer.parseInt(hex, 16));
    }

public static void main(String[] args) {

int binary = 4;

int hexadecimal = 43;

//Convert the integer to binary. Stored in String.

String bin = Integer.toBinaryString(binary);

System.out.println(binary + " as binary: " + bin);

//Convert the second integer into hex. Stored in String.

String hex = Integer.toHexString(hexadecimal);

System.out.println(hexadecimal + " as hex: " + hex);

//To convert back, parse the String with base 2 (binary).

System.out.println(bin + " as integer: " + Integer.parseInt(bin, 2));

//Hexadecimal is base-16, so pass in 16 as base.

System.out.println(hex + " as integer: " + Integer.parseInt(hex, 16));

}

Just paste these java codes in your java file .Compile and Run it . Now u will be able to easily convert the Number… Read More »Converting Number System

Problem at Constructor's Parameter

by Narayan Gopal Maharjan
August 19, 2008January 31, 2012
1 Comment

Problem: [sourcecode=’java’] import java.util.*; public class Test{ public static void main(String[] args){ ArrayList x = new ArrayList(); x.add(new Student(“Naray”)); x.add(new Student(“Gopal”)); } } [/sourcecode] //in… Read More »Problem at Constructor's Parameter

Narayan Gopal Maharjan

Polymorphism on three classes

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Small Applet

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Using Switch

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Converting Number System

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Problem at Constructor's Parameter

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