/*

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 */

/**

 *

 * @author HP

 */

import java.io.BufferedReader; 

 

import java.io.IOException; 

 

import java.io.InputStreamReader; 

 

public class GetInputFromKeyboard 

 

{ 

 

public static void main( String[] args ){ 

 

BufferedReader dataIn = new BufferedReader(new InputStreamReader( 

 

System.in) ); 

 

int sisi = ""; 

 

System.out.print("enter angka:"); 

 

try{ 

 

sisi = dataIn.readLine(); 

 

}catch( IOException e ){ 

 

System.out.println("Error!"); 

 

} 

 

 

} 

 

} 

public class Persegi {

Luas = Sisi * Sisi;



}