1、背景:
Java 多线程异常不向主线程抛,自己处理,外部捕获不了异常。所以要实现主线程对子线程异常的捕获。
2、工具:
实现Runnable接口的LayerInitTask类,ThreadException类,线程安全的Vector
3、思路:
向LayerInitTask中传入Vector,记录异常情况,外部遍历,判断,抛出异常。
4、代码:
package step5.exception;
import java.util.Vector;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import com.autonavi.pds.core.incre.impl.LayerInitTask;
public class ThreadException {
public static void main(String[] args) {
try {
Vector<String> errRet = new Vector();
ExecutorService pool = Executors.newFixedThreadPool(6);
for (int i = 0; i < 6; ++i) {
pool.execute(new LayerInitTask(i, errRet));
}
pool.shutdown();
pool.awaitTermination(1, TimeUnit.DAY