关于下面这段代码：
import java.io.*;
import java.util.*;
import java.util.zip.*;
public class ZIPcompress {
public static void main(String[] args)
{
try
{
FileOutputStream f=new FileOutputStream("test1.zip");
CheckedOutputStream csum=new CheckedOutputStream(f,new Adler32());//维护写入数据校验和的输出流，校验和用于验证数据的完整性
ZipOutputStream out=new ZipOutputStream(new BufferedOutputStream(csum));
out.setComment("a test of java zip");
for(int i=0;i<args.length;i++)
{
System.out.println("writing file:"+args[i]);
BufferedReader in =new BufferedReader(new FileReader(args[i]));
out.putNextEntry(new ZipEntry(args[i]));
int c;
while((c=in.read())!=-1)
out.write(c);
in.close();
}
out.close();
System.out.println("checksum:"+csum.getChecksum().getValue());//输出流文件关闭之后校验和才有效
//现在来提取文件
FileInputStream fi=new FileInputStream("test1.zip");
CheckedInputStream icsum=new CheckedInputStream(fi,new Adler32());
ZipInputStream in2=new ZipInputStream(new BufferedInputStream(icsum));
ZipEntry ze;
System.out.println("checksum:"+icsum.getChecksum().getValue());
while((ze=in2.getNextEntry())!=null)
{
System.out.println("reading file:"+ze);
int c;
while((c=in2.read())!=-1)
System.out.write(c);
}
in2.close();
}catch(Exception e)
{
e.printStackTrace();
}
}
}
此时输出：
writing file:data1.txt
writing file:data2.txt
checksum:2351909358
checksum:1
reading file:data1.txt
today is Friday
tomorrow is Saturday
the day after tomorrow is Sunday!reading file:data2.txt
aaaaaaaaaaaaaa
当我把System.out.write(c)改为System.out.print((char)c)时可以成功输出：
writing file:data1.txt
writing file:data2.txt
checksum:4167911358
checksum:1
reading file:data1.txt
today is Friday
tomorrow is Saturday
the day after tomorrow is Sunday!reading file:data2.txt
aaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbb
大家应该知道我的两个文件的内容了吧，为什么write()方法读不出最后一行，而print()方法可以。
！！！注意到使用write()方法读出时，最下面是一行空白，说明文件是有内容的，（压缩文件中两个文件的内容都是完整的）就是无法显示。不知道各位是否可以给个解释。谢谢！！！
------解决方案--------------------
你只需要在System.out.write(c);后面增加一行System.out.flush();就可以了，因为write方法不会自动flush缓冲区，而是碰到回车才会flush，所以你就看不到最后一行了。
附上PrintStream类的write方法源码，你看看就明白了。
public void write(int b) {
try {
synchronized (this) {
ensureOpen();
out.write(b);
if ((b == '\n') && autoFlush)
out.flush();
}
}
catch (InterruptedIOException x) {
Thread.currentThread().interrupt();
}
catch (IOException x) {
trouble = true;
}
}