InputOutput Programming in JAVA import java util Scanner

Input/Output Programming in JAVA

import java. util. Scanner; // program uses class Scanner input = new Scanner( System. in ); number 1 = input. next. Int(); // read number from user number 2 = input. next. Int();

import java. util. Scanner; // program uses class Scanner public class Simple. IO { public static void main( String args[] ) { Scanner input = new Scanner( System. in ); int number; System. out. print( "Enter integer: " ); // prompt number = input. next. Int(); // read number from user System. out. printf( "Your Entered Number is %d. n", number); } // end method main } // end class Simple. IO

import java. util. Scanner; // program uses class Scanner public class Comparison { // main method begins execution of Java application public static void main( String args[] ) { // create Scanner to obtain input from command window Scanner input = new Scanner( System. in ); int number 1; // first number to compare int number 2; // second number to compare System. out. print( "Enter first integer: " ); // prompt number 1 = input. next. Int(); // read first number from user System. out. print( "Enter second integer: " ); // prompt number 2 = input. next. Int(); // read second number from user

if ( number 1 == number 2 ) System. out. printf( "%d == %dn", number 1, number 2 ); if ( number 1 != number 2 ) System. out. printf( "%d != %dn", number 1, number 2 ); if ( number 1 < number 2 ) System. out. printf( "%d < %dn", number 1, number 2 ); if ( number 1 > number 2 ) System. out. printf( "%d > %dn", number 1, number 2 ); if ( number 1 <= number 2 ) System. out. printf( "%d <= %dn", number 1, number 2 ); if ( number 1 >= number 2 ) System. out. printf( "%d >= %dn", number 1, number 2 ); } // end method main } // end class Comparison

Simple GUI import javax. swing. JOption. Pane; public class Simple. GUI{ public static void main( String args[] ) { String your. Name; // your. Name = JOption. Pane. show. Input. Dialog( "What is Your Name: " ); JOption. Pane. show. Message. Dialog( null, "Hello " + your. Name ); } // end method main } // end class

import javax. swing. JOption. Pane; public class Simple. Integer. GUI{ public static void main( String args[] ) { int x; // number int y; String x. Val; // string input by user x. Val = JOption. Pane. show. Input. Dialog( "Enter integer x: " ); x = Integer. parse. Int( x. Val ); y = x * x; JOption. Pane. show. Message. Dialog( null, “ x^2 is " + y ); } // end method main } // end class