myrandom.java

具有代表性的示例,是初学java编程者不错的选择.

/*
 * Created on 2005-5-14
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package org.chapter2;

import java.util.Random;
/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class MyRandom {

	public static void main(String[] args) {
		Random ran = new Random();
		ran.setSeed( 13572468 );
		for ( int i=0; i<5 ;i++){
			System.out.print(ran.nextBoolean());
			System.out.print( " " );
		}
		System.out.println();
		for ( int i=0; i<10 ;i++){
			System.out.print(ran.nextInt());
			System.out.print( " " );
		}
		System.out.println();
		for ( int i=0; i<5 ;i++){
			System.out.print(ran.nextLong());
			System.out.print( " " );
		}
		System.out.println();
		for ( int i=0; i<5 ;i++){
			System.out.print(ran.nextFloat());
			System.out.print( " " );
		}
		System.out.println();
		for ( int i=0; i<5 ;i++){
			System.out.print(ran.nextDouble());
			System.out.print( " " );
		}
	}
}