Sunday, April 18, 2010

Compute two numbers in java using user input

this program will ask the user to input two numbers and get the sum.

import java.io.*;
import java.util.Scanner;

public class getsum
{
public static void main(String args[])
{

Scanner input=new Scanner(System.in);
int num1,num2;
int sum=0;

System.out.print("Enter First Number:");
num1=input.nextInt();

System.out.print("Enter Second Number:");
num2=input.nextInt();

sum=num1+num2;

System.out.print("The sum is:" + sum);


}
}

user input in java

The program will ask the user to input name, address and the program will show what they input.
we use here the namespace which is the util.scanner.

User input in java using string;

name of java file: javainput

Sample program:

import java.util.scanner;
public class javainput
{
public static void main(String args[])
{
Scanner input=new Scanner(System.in);

//declaration
String name,address;
System.out.println("Enter your name:");
name=input.next();

System.out.println("Enter your name:");
address=input.next();

//displaying the result
System.out.print("Your Name:" + name);
System.out.print("Your Name:" + add);
}
}

String in Java

he String class represents character strings. All string literals in Java programs, such as "abc", are implemented as instances of this class.

Strings are constant; their values cannot be changed after they are created. String buffers support mutable strings. Because String objects are immutable they can be shared. For example:

     String str = "abc";  
sample program.

import java.io.*;

public class stringsample
{
public static void main(String args[])
{
System.out.print("Hello World");
System.out.print("Welcome to my String Java program");

}
}