多线程共享变量方法

1.public class MultiThreadShareData {

private static ShareData1 data1=new ShareData1();
public static void main(String[] args) {
	ShareData1 data1 = new ShareData1();
	new Thread(new MyRunnable1(data1)).start();
	new Thread(new MyRunnable2(data1)).start();
	
	
}

}

class MyRunnable1 implements Runnable{

private ShareData1 data1;
public MyRunnable1(ShareData1 data1) {
	this.data1 = data1;
}
@Override
public void run() {
	data1.decrement();
}

}

class MyRunnable2 implements Runnable{

private ShareData1 data1;
public MyRunnable2(ShareData1 data1) {
	this.data1 = data1;
}
@Override
public void run() {
	data1.increment();
}

}
class ShareData1{
private int j=0;
public synchronized void increment(){
j++;
}

public synchronized void decrement(){
	j--;
}

}

作者：IT小白_L
来源：****
原文：https://blog.****.net/lu930124/article/details/51251809
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