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43 lines (34 loc) · 1.19 KB
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package ThreadTest;
/*
在没有使用线程池之前，thread/runnable接口中的run方法的异常只能在run方法里边捕获，不能冒泡到调用线程上边
接下来要说的是：线程池的异常处理器，线程池让每一个生成的线程都附着一个异常处理器
*/
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
class ExceptionHandler implements Thread.UncaughtExceptionHandler{
@Override
public void uncaughtException(Thread t, Throwable e) {
System.out.print("catch "+e);
}
}
class HandlerThreadFactory implements ThreadFactory{
@Override
public Thread newThread(Runnable r) {
Thread thread=new Thread(r);
thread.setUncaughtExceptionHandler(new ExceptionHandler());
return thread;
}
}
class ExceptionThread implements Runnable{
@Override
public void run() {
throw new RuntimeException();
}
}
public class ThreadException {
public static void main(String[] args) {
ExecutorService service=Executors.newCachedThreadPool(new HandlerThreadFactory());
service.execute(new ExceptionThread());
}
}