IO流11 --- 缓冲流(字符型)实现文本文件的复制 --- 技术搬运工（尚硅谷）

• 方法一：读到指定字符数组

@Test
public void test7(){
    BufferedReader br = null;
    BufferedWriter bw = null;
    try {
        br = new BufferedReader(new FileReader("射雕英雄传.txt"));
        bw = new BufferedWriter(new FileWriter("射雕英雄传1.txt"));
 
        char[] cbuf = new char[1024];
        int len;
        while ((len = br.read(cbuf)) != -1){
            bw.write(cbuf, 0, len);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }finally {
        if (bw != null){
            try {
                bw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (br != null){
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

• 方法2：一次读一行

@Test
public void test8(){
    BufferedReader br = null;
    BufferedWriter bw = null;
    try {
        br = new BufferedReader(new FileReader("射雕英雄传.txt"));
        bw = new BufferedWriter(new FileWriter("射雕英雄传1.txt"));
 
        String data;
        while ((data = br.readLine()) != null){
            bw.write(data);//不包括换行
            bw.newLine();//换行
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (bw != null){
            try {
                bw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (br != null){
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}