奇怪,代码执行不到,调试却能执行到,求大神 - 黑马程序员技术交流社区

import java.io.*;
import java.util.*;
import java.util.concurrent.locks.*;
class Test
{
static int id ;
static int del;
static Lock lock = new ReentrantLock();
static Condition condition = lock.newCondition();
public static void main(String[] args)
{
System.out.println("请输入要分解的文件");
Scanner input = new Scanner(System.in);
String path = input.nextLine();
split(path);
System.out.println("请输入要合并的文件夹");
path = input.nextLine();
try {
sequenceInputStream(path);
} catch (IOException e) {
e.printStackTrace();
}
}
/*
* 分解文件
* RandomAccessFile+使用多线程实现
* */
public static void split(String path){
final File src = new File(path); //要分解的文件
final File dest = new File(src.getParent(),"."+src.getName()); //临时文件夹
dest.mkdirs(); //创建临时文件夹
final long len = src.length()/5+1; //算出每个分解出来文件时多大
for( int i=0;i<5;i++){ //循环5次,创建5个线程,每个线程输出分解出来的每个文件中的内容
new Thread(){ //创建线程,输出分解出来的内容
public void run(
lock.lock();
try(
RandomAccessFile ra = new RandomAccessFile(src,"rw");
FileOutputStream fos = new FileOutputStream(new File(dest,(id+1)+""));
){
long lo = id++*len;
ra.seek(lo);
lock.unlock();
int index=1;
int l;
byte[] b = new byte[1024*1024];
while((l=ra.read(b,0,(int)(b.length*index++<len?b.length:len%b.length)))!=-1){
fos.write(b,0,l);
if(l==len%b.length) break;
}
}catch(Exception e){
e.printStackTrace();
}
del++;
}
}.start(); //开启线程
}
---------------------------------------------------------------------------------------------------------------------------------------
while(del==5){ //如果5个线程都执行完毕,就用临时文件夹,替换源文件
/*
* 以下代码
* 不设断点,就执行不到,求原因
* */
System.out.println(src.delete());
System.out.println(dest.renameTo(src));
break;
}
----------------------------------------------------------------------------------------------------------------------------------------
}
/*
* 下面是将分解出来的5个文件合并成一个文件,没有问题....
* */
public static void sequenceInputStream(String path) throws IOException{
SequenceInputStream sis=null;
BufferedOutputStream bos=null;
File src=new File(path);
File dest = new File(src.getParent(),"."+src.getName());
try{
ArrayList<BufferedInputStream> al = new ArrayList();
for(File file : src.listFiles()){
al.add(new BufferedInputStream(new FileInputStream(file)));
}
sis = new SequenceInputStream(Collections.enumeration(al));
bos = new BufferedOutputStream(new FileOutputStream(dest));
int i;
while((i=sis.read())!=-1){
bos.write(i);
}
}finally{
try{
sis.close();
}finally{
bos.close();
}
}
del(src);
src.delete();
System.out.println(dest.renameTo(src));
}
/*
* 删除文件夹
* */
public static void del(File file){
if(!file.isDirectory()){
file.delete();
}else{
File[] fs = file.listFiles();
for(File f:fs){
del(f);
}
}
}
}

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