缠绕指尖__
沝2package IO;
import java.io.*;
public class Io {
public static void main(String[] args) throws Exception{
File file = new File("e:/java/src");
file.mkdirs();
File file1 = new File("e:/java/src/in.txt");
file1.createNewFile();
byte[] bytes = new byte[]{97,98,99,100};
FileOutputStream out = new FileOutputStream(file1);
out.write(bytes);
byte[] bytess = new byte[1];
FileInputStream in =new FileInputStream(file1);
File file2 = new File("e:/java/src/out.txt");
file2.createNewFile();
FileOutputStream out1 = new FileOutputStream(file2);
int x = in.read(bytess);
while(x!=-1){out1.write(bytess);
in.read(bytess);
}
out.close();
out1.close();
in.close();}
}
沝2package IO;
import java.io.*;
public class Io {
public static void main(String[] args) throws Exception{
File file = new File("e:/java/src");
file.mkdirs();
File file1 = new File("e:/java/src/in.txt");
file1.createNewFile();
byte[] bytes = new byte[]{97,98,99,100};
FileOutputStream out = new FileOutputStream(file1);
out.write(bytes);
byte[] bytess = new byte[1];
FileInputStream in =new FileInputStream(file1);
File file2 = new File("e:/java/src/out.txt");
file2.createNewFile();
FileOutputStream out1 = new FileOutputStream(file2);
int x = in.read(bytess);
while(x!=-1){out1.write(bytess);
in.read(bytess);
}
out.close();
out1.close();
in.close();}
}
你这个也太小了吧,如果一个文件很大那得读很久的
while(x!=-1)
{
out1.write(bytess);
in.read(bytess);
}
改一下: int x = in.read(bytess);
while(x!=-1)
{
out1.write(bytess);
x=in.read(bytess);
}
while(x!=-1){ out1.write(bytess);
in.read(bytess);
}改成int x = 0;
while((x=in.read(bytess))!=-1){
out1.write(bytess);
in.read(bytess);
}
int x = 0;
while((x=in.read(bytess))!=-1){
out1.write(bytess);
}刚发错了 多了一行代码
while(x!=-1){out1.write(bytess);
in.read(bytess);
}
这不是好像,而就是死循环。x永远都不会等于-1的。
顶下楼上,代码就不重复发了
while(x!=-1){
out1.write(bytess);
in.read(bytess); //这里忘记把x赋上了吧?
}