在a上调用中断方法后会发生以下哪种情况 由于先前调用连接而阻塞的线程， 睡觉或等待方法？
- 线程进入not-runnable状态
- 线程移出not-runnable状态
- 当线程进入运行状态时抛出interruptedException
- 抛出InterruptedException后调用Thread.interrupted将返回true
- 以上都不是。
为回答上述问题，我创建了以下程序。
计划1
public class JavaApplication1 {
public static void main(String[] args) {
try {
Thread.sleep(2000);
boolean interrupted = Thread.interrupted();
System.out.println(interrupted);
Thread currentThread = Thread.currentThread();
System.out.println("Current Thread ID : " + currentThread.getId());
System.out.println("State : " + currentThread.getState());
Thread t = new Thread(() -> System.out.println("runnable target"));
System.out.println("Thread t not started yet : " + t.getState());
System.out.println("Thread t not started yet : " + t.isAlive());
System.out.println("T id : " + t.getId());
Thread t2 = new Thread(() -> {
for (int i = 0; i < 10; i++) {
try {
System.out.println("runnable target");
if (i == 5) {
Thread.sleep(2000);
}
} catch (InterruptedException ex) {
Logger.getLogger(JavaApplication1.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
t2.start();
System.out.println("T id : " + t2.getId());
System.out.println("default priority : " + t2.getPriority());
System.out.println("interrupting the main thread---");
currentThread.interrupt();
System.out.println("Current Thread ID : " + currentThread.getId());
System.out.println("State : " + currentThread.getState());
System.out.println("State : " + currentThread.isInterrupted());
System.out.println("interrupting the t2 thread---");
t2.interrupt();
System.out.println("Current Thread ID : " + t2.getId());
System.out.println("State : " + t2.getState());
System.out.println("State : " + t2.isInterrupted());
} catch (InterruptedException ex) {
System.out.println("Interrupted Exception :" + ex);
}
}
}
计划1的输出：
false
Current Thread ID : 1
State : RUNNABLE
Thread t not started yet : NEW
Thread t not started yet : false
T id : 10
T id : 11
default priority : 5
interrupting the main thread---
Current Thread ID : 1
State : RUNNABLE
State : true
interrupting the t2 thread---
Current Thread ID : 11
State : RUNNABLE
State : true
runnable target
runnable target
runnable target
runnable target
runnable target
runnable target
runnable target
runnable target
runnable target
Jan 12, 2018 3:36:43 PM javaapplication1.JavaApplication1 lambda$main$1
runnable target
SEVERE: null
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at javaapplication1.JavaApplication1.lambda$main$1(JavaApplication1.java:27)
at java.lang.Thread.run(Thread.java:748)
计划2
public class JavaApplication1 {
public static void main(String[] args) {
try {
Thread.sleep(2000);
boolean interrupted = Thread.interrupted();
System.out.println(interrupted);
Thread currentThread = Thread.currentThread();
System.out.println("Current Thread ID : " + currentThread.getId());
System.out.println("State : " + currentThread.getState());
Thread t = new Thread(() -> System.out.println("runnable target"));
System.out.println("Thread t not started yet : " + t.getState());
System.out.println("Thread t not started yet : " + t.isAlive());
System.out.println("T id : " + t.getId());
Thread t2 = new Thread(() -> {
for (int i = 0; i < 10; i++) {
try {
System.out.println("runnable target");
if (i == 5) {
System.out.println("t2 interrupted? "+Thread.interrupted());
System.out.println("State : "+currentThread.getState());
Thread.sleep(2000);
}
} catch (InterruptedException ex) {
Logger.getLogger(JavaApplication1.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
t2.start();
System.out.println("T id : " + t2.getId());
System.out.println("default priority : " + t2.getPriority());
System.out.println("interrupting the main thread---");
currentThread.interrupt();
System.out.println("Current Thread ID : " + currentThread.getId());
System.out.println("State : " + currentThread.getState());
System.out.println("is interrupted : " + currentThread.isInterrupted());
System.out.println("interrupting the t2 thread---");
t2.interrupt();
System.out.println("Current Thread ID : " + t2.getId());
System.out.println("State : " + t2.getState());
System.out.println("is interrupted : " + t2.isInterrupted());
} catch (InterruptedException ex) {
System.out.println("Interrupted Exception :" + ex);
}
}
}
计划2的输出：
false
Current Thread ID : 1
State : RUNNABLE
Thread t not started yet : NEW
Thread t not started yet : false
T id : 10
T id : 11
default priority : 5
interrupting the main thread---
Current Thread ID : 1
State : RUNNABLE
State : true
interrupting the t2 thread---
Current Thread ID : 11
State : RUNNABLE
is interrupted : true
runnable target
runnable target
runnable target
runnable target
runnable target
runnable target
t2 interrupted? true
is interrupted : TERMINATED
runnable target
runnable target
runnable target
runnable target
我选择了选项1和3，因为，
状态在程序2中终止。
程序1中t2的状态为RUNNABLE，并且分别抛出睡眠中断异常。
如果t2的状态为TERMINATED，那么“runnable target”最后是如何打印4次？如果状态是TERMINATED，那么线程不应该停止运行吗？