Java.io.PrintWriter.close() 方法 Java.io.PrintWriter.clearError() 方法 Java.io.PrintWriter.flush() 方法 Java.io.PrintWriter.close() 方法 package com.codingdict; import java.io.*; public class PrintWriterDemo { public static void main(String[] args) { String s = "Hello World "; try { // create a new stream at system PrintWriter pw = new PrintWriter(System.out); // append the sequence pw.append(s); // flush the writer pw.flush(); // print another string pw.println("This is an example"); // flush the writer again pw.flush(); // close the writer pw.close(); } catch (Exception ex) { ex.printStackTrace(); } } } Java.io.PrintWriter.clearError() 方法 Java.io.PrintWriter.flush() 方法