java字節流復制文件

import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.junit.Test;

public class JavaIO {

    @Test
    public void test() throws Exception{
        //1、輸入輸出路徑
        String inputPath = "C:\\Users\\zwx474555\\Desktop\\E04D24C1-BB2F-424A-AD2D-7B770C96F9A1.png";  //圖片路徑
        String outPath = "F:\\123.png";  //復制路徑及文件名
        
        //2、輸入輸出流對象
        FileInputStream fis = new FileInputStream(inputPath);
        FileOutputStream fos = new FileOutputStream(outPath);
        
        //3、聲明字節數組，每次按1K讀取，按1K輸出
        byte[] bytes = new byte[1024];
        
        int temp = 0;
        while((temp = fis.read(bytes)) != -1){
            fos.write(bytes, 0, temp); //一邊讀取，一邊輸出
        }
        //4、刷新輸出流
        fos.flush();
        
        //5、關閉流
        fis.close();
        fos.close();
        
    }
}