squareoverload.java

java2 primer plus一书源程序

public class SquareOverload {
  public static int square( int n ) {
    System.out.println( "Integer Square" );
    return n*n;
  }

  public static long square( long l ) {
    System.out.println( "Long Square" );
    return l*l;
  }

  public static double square( double d ) {
    System.out.println( "Double Square" );
    return d*d;
  }


  public static void main( String[] args ) {
    int n = 5;
    long l = 100;
    double d = 1000.0;
    System.out.println( "n squared=" + square( n ) );
    System.out.println( "l squared=" + square( l ) );
    System.out.println( "d squared=" + square( d ) );
    
  }
}