Java.io.Writer.close() 方法 Java.io.Writer.append Subsequence() 方法 Java.io.Writer.flush() 方法 Java.io.Writer.close() 方法 package com.codingdict; import java.io.*; public class WriterDemo { public static void main(String[] args) { String s = "Hello World"; // create a new writer Writer writer = new PrintWriter(System.out); try { // append a string writer.append(s); // flush the writer writer.flush(); // append a new string writer.append("\nThis is an example"); // flush and close the stream writer.close(); } catch (IOException ex) { ex.printStackTrace(); } } } Java.io.Writer.append Subsequence() 方法 Java.io.Writer.flush() 方法