技術標籤：Javajava

我這裡只是提供簡單的成品程式碼，不明白的點請看我前面寫的有關IO的基礎知識，通常使用“程式碼2”

程式碼1（節點流）：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyFile {
	public static void main(String[] args) {
		File f1 =
 
 new File("src/foryou/IO/check.jpg");
		File f2 = new File("src/foryou/IO/check_copy.jpg");
		FileInputStream in =null;
		FileOutputStream out =null;
		try {
			in = new FileInputStream(f1);
			out = new FileOutputStream(f2);
			byte []b =new byte[10];
			int len;
			while((len = in.read
 
(b)) != -1) {
				out.write(b, 0, len);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally {
			try {
				if(out != null) {
					out.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			try {
				if(in != null) {
					in.close();
				}
			} catch (IOException e)
 
 {
				e.printStackTrace();
			}
		}
		System.out.println("image is completed");
	}
}

程式碼2（緩衝流）：

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileIn_OutputStreamCopyFile {
	public static void main(String[] args) {
		File f1 = new File("src/foryou/IO/check.jpg");
		File f2 = new File("src/foryou/IO/check_copy.jpg");
		BufferedInputStream bin =null;
		BufferedOutputStream bout =null;
		try {
			bin = new BufferedInputStream(new FileInputStream(f1));
			bout = new BufferedOutputStream(new FileOutputStream(f2));
			byte []b =new byte[10];
			int len;
			while((len = bin.read(b)) != -1) {
				bout.write(b, 0, len);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally {
			try {
				if(bout != null) {
					bout.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			try {
				if(bin != null) {
					bin.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		System.out.println("image is completed");
	}
}

結果：