IO知识点汇总3

Posted 2020-10-07

10、Reader和Writer

　　Reader和Writer是所有字符流的抽象基类，使用上和字节流类似，把byte改成char就可以。掌握了字节流，字符流很容易就可以掌握。

    public static void test1() {
        BufferedReader reader = null;
        BufferedWriter writer = null;
        try {
            reader = new BufferedReader(new FileReader(path + "result.txt"));
            writer = new BufferedWriter(new FileWriter(path + "result1.txt"));
            String line;
            while ((line = reader.readLine()) != null) {
                writer.write(line, 0, line.length());
                writer.newLine();
            }
        } catch (Exception e) {
        } finally {
            org.apache.commons.io.IOUtils.closeQuietly(reader);
            IOUtils.closeQuietly(writer);
        }
    }

    public static void test2() {
        BufferedWriter writer = null;
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new FileReader(path + "result.txt"));
            writer = new BufferedWriter(new FileWriter(path + "result1.txt"));
            char buff[] = new char[1024];
            int len;
            while ((len = reader.read(buff)) != -1) {
                writer.write(buff, 0, len);
            }
        } catch (Exception e) {

        } finally {
            IOUtils.closeQuietly(writer);
            IOUtils.closeQuietly(reader);
        }
    }

java IO先整理到这里，后面有碰到相关的问题会继续做整理