java让2个线程交替执行，每个线程执行1秒

java让2个线程交替执行，每个线程执行1秒：

package tf56.SpringBoot.Annotation;

/**
* Created by Administrator on 2017/10/17.
*/
public class Test2 {
private static int state = 1;

public static void main(String[] args) {
final Test2 t=new Test2();
new Thread(new Runnable() {
@Override
public void run() {
while (true) {
synchronized (t) {
if (state != 1) {
try {
t.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
try {
System.out.println("轮到线程一开始执行");
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//线程1执行一秒
state=2;
t.notifyAll();
}
}
}
}).start();

new Thread(new Runnable() {
@Override
public void run() {
while (true) {
synchronized (t) {
if (state != 2) {
try {
t.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
try {
System.out.println("轮到线程二开始执行");
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//线程1执行一秒
state=1;
t.notifyAll();
}
}
}
}).start();
}
}
打印100以内的所有数据，线程1打印奇数，打印5个数切换到线程2，线程2打印偶数，打印5个然后切换到线程1
package tf56.SpringBoot.Annotation;

/**
* Created by Administrator on 2017/10/17.
*/
public class Test1 {
private static int state = 1;
private static int num1 =1;
private static int num2 =2;

public static void main(String[] args) {
//声明一个需要加锁的对象
final Test1 t = new Test1();
//打印奇数的线程
new Thread(new Runnable() {
@Override
public void run() {
while (num1 < 100) {
synchronized (t) {
if (state != 1) {
try {
t.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
for (int i=0; i < 5; i++) {
System.out.println(num1 + ".....");
num1+=2;
}
state = 2;
t.notifyAll();
}
}
}
}).start();

//打印偶数的线程
new Thread(new Runnable() {
@Override
public void run() {
synchronized (t){
while (num2<100){
if(state !=2){
try {
t.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//打印偶数
for(int i = 0;i<5;i++){
System.out.println(num2+".....");
num2+=2;
}
state =1;
t.notifyAll();
}
}
}
}).start();

}
}