Java Basic Programs

Write your java program on a notepad screen. Save the program with .java extension.

The name of the program should be the name of the class containing the main function.

The How to run a java program through cmd??

Go to start menu button, search for cmd

In the command prompt screen direct to the folder where your java programs reside… using cd.. command.

For example to reach F: Studies folder

cd..

F:

Cd Studies

So now once you reach there type the following commands

Javac nameofprogram.java

Java nameofprogram

Solve the errors and run the program !! 

//Java Program to demonstrate Overloading

class overloading

{

  public static void main(String[] args)

{

    functionOverload obj = new functionOverload();

    obj.add(1,2);

    obj.add(11.5, 22.5);

    obj.add("Palak ","Sanghani");

}

}

class functionOverload

{

void add(int a, int b, int c)

{

  int sum = a + b + c;

  System.out.println("Sum of a+b+c is: " + sum);

}

void add(double a, double b) 

{

  double sum = a + b;

  System.out.println("Sum of a+b is: " + sum);

}

void add(String s1, String s2)

{

  String s = s1+s2;

  System.out.println(s);

}

}

//Java Program to accept user input

import java.util.Scanner;

public class userinput

{

          public static void main(String[] args)

          {

                   Scanner user_input = new Scanner(System.in);

                   String FirstName;

                   System.out.println("Enter First Name: ");

                   FirstName = user_input.next();

                   String LastName;

                   System.out.println("Enter Last Name: ");

                   LastName = user_input.next();

                   System.out.println("Welcome, " + FirstName + " " + LastName);

          }

}