这段代码错在哪里

Question

public synchronized int waitForRest() throw InterruptedException问题出在 throw       想抛出异常正确写法为 throws

Answer 1

//我kao,伙计，太离谱了吧。
package test;
import java.lang.*;public class Barrier{
        private int threads2Wait4;
        private InterruptedException iex;        public Barrier(int nThreads)
        {
                threads2Wait4 = nThreads;
        }//        public synchronized int waitForRest() throw InterruptedException
        public synchronized int waitForRest() throws InterruptedException
        {
                int threadNum = --threads2Wait4;                if(iex!= null) throw iex;
//                if(thread2Wait4<=0){
                if(threads2Wait4<=0){
                        notifyAll();
                        return threadNum;
                }
                while(threads2Wait4 > 0){
                        if(iex!=null) throw iex;
                        try{
                                wait();
                        }catch(InterruptedException ex){
                                iex = ex;
                                notifyAll();
                        }
                }
                return threadNum;
        }        public synchronized void freeAll()
        {
                iex = new InterruptedException("Barrier Released by freeAll");
                notifyAll();
        }
}

Answer 2

public synchronized int waitForRest() throws InterruptedException  ///这句改一点
{