Java Writer append()方法

java.io.Writer.append(CharSequence csq) 将指定的字符序列附加到此Writer。

1 语法

public Writer append(CharSequence csq)

2 参数

csq：要追加的字符序列。如果csq为null，则将四个字符"null"追加到Writer。

3 返回值

返回Writer。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.Writer.append(CharSequence csq)方法的例子
 */
import java.io.*;

public class Demo {
    public static void main(String[] args) {
        CharSequence csq = "Hello World!";

        // create a new writer
        Writer writer = new PrintWriter(System.out);

        try {
            // append a sequence and change line
            writer.append("This is an example\n");

            // flush the writer
            writer.flush();

            // append a new sequence
            writer.append(csq);

            // flush the writer to see the result
            writer.flush();

        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}

输出结果为：

This is an example
Hello World!