Java随机 Java真随机，

Java随机 Java真随机，

最近发现java自带的随机函数是可以遇见的，自己就根据随机的理解利用cpu和时间的随机种子写了一个随机类，希望对你有所启发！！！

不说这么多了直接上源码：

public class Random {

	public static void main(String[] args) {
		Random r = new Random((short) 100);
		for (int i = 0; i < 50; i++) {
			try {
				System.out.println(r.next());
			} catch (Exception e) {
				e.printStackTrace();
			}
		}

	}

	private short r=0 ;//随机对象范围
	private boolean isCall =false ;
	private boolean isCall2 =false ;


	public Random (short r){
		this.r=r;

	}

	Object obj = new Object();
	public int  next() throws Exception{
		isCall =false ;
		isCall2 =false ;

		RandomRunnable	rr1= new RandomRunnable(new Call() {
			//启动线程后通知
			@Override
			void call() {
				isCall=true;
				synchronized (obj){
					obj.notify();
				}
			}
		});
		RandomRunnable	rr2= new RandomRunnable(new Call() {
			//启动线程后通知
			@Override
			void call() {
				isCall2=true;
				synchronized (obj){
					obj.notify();
				}
			}
		});

		//启动子线程
		new Thread(rr1).start();

		new Thread(rr2).start();

		//等待子线程启动挑出来
		while(!isCall || !isCall2){
			synchronized (obj) {
				obj.wait();
			}
		}
		long c = System.nanoTime();
		int t = (int) (c%2 +1);
		//睡眠1毫秒等运算好
		//		Thread.sleep(1l);
		//停止线程运算获取相关值
		//停止线程运算获取相关值
		int j1 =rr1.endRunnable();
		int j2 =rr2.endRunnable();
         if(j1==0)
        	 j1=j2;
         if(j2==0)
        	 j2=j1;

		int j =0;
		//获取线程运算的数字
		switch (t) {
		case 1:
			j=j1;
			break;
		case 2:
			j=j2;
			break;

		default: 
			break;
		}

		return  j%(r+1);
	}


}
class RandomRunnable implements Runnable{
	private int j =0; 

	private Call call;

	private boolean b = true;

	public RandomRunnable(Call call){
		this.call = call;
	}



	@Override
	public void run() {
		call.call();
		while (b&&j<10000000) {
			j++;
		}
	}



	public int endRunnable(){
		b=false;
//				System.out.println(j);
		return  j;
	}


}

abstract class Call{
	//运行线程了告诉主线程
	abstract void call();
}

运行结果