Java Tutorial: BufferedReader Example

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
*
* @author paiman
*/
public class HelloBufferedReader {

public static void main( String[] args ) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader( System.in) );
String name;
System.out.print("Please Enter Your Name: ");
name = br.readLine();
System.out.println("Hello, " + name +"! Thank you for visiting my blog :)");
}
}

Java Tutorial: Scanner Example

import java.util.Scanner;

/**

*

* @author paiman

*/

public class HelloScanner {

public static void main(String[] args) {

Scanner input = new Scanner( System.in );

System.out.print ("What is your name? ");

String name = input.nextLine();

System.out.println("Hello, "+name+"! Welcome to my blog :)");

}

}

import java.util.Scanner;

/**

*

* @author paiman

*/

public class RectangleWide {

public static void main(String[] args) {

Scanner input = new Scanner( System.in );

System.out.print ("Input long: ");

int l = input.nextInt();

System.out.print ("Input width: ");

int w = input.nextInt();

System.out.println("Rectangle wide: "+l*w);

}

}

import java.util.Scanner;

/**

*

* @author paiman

*/

public class CircumferenceOfACircle {

public static void main(String[] args) {

Scanner input = new Scanner( System.in );

System.out.print ("Input radius: ");

double r = input.nextDouble();

double pi = 3.142857143;

double circumference = 2*pi*r;

System.out.println("The circumference of a Circle with radius "+r+" is "+circumference);

}

}