IO流操作套路:
1、创建源;
2、选择流;
3、操作;
4、释放资源
上代码:
package com.xzlf.io;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* 文件拷贝
* @author xzlf
*
*/
public class CopyFile {
public static void main(String[] args) {
// copy("src/com/xzlf/io/CopyFile.java", "src/CopyFile.txt");
copy("f:/aa/1.jpg", "src/1.jpg");
}
public static void copy(String srcPath, String destPath) {
// 1、创建源
File src = new File(srcPath);
File dest = new File(destPath);
// 2、选择流
InputStream is = null;
OutputStream os = null;
try {
is = new FileInputStream(src);
os = new FileOutputStream(dest);
byte[] flush = new byte[1024];
int len = -1;
// 3、操作(循环读取)
while ((len = is.read(flush)) != -1) {
os.write(flush, 0, len);
}
os.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
// 4、释放资源
try {
if (os != null) {
os.close();
}
} catch (IOException e) {
e.printStackTrace();
}
try {
if (is != null) {
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
以上是IO的基本操作,IO的操作都可以按这样的套路来。