void newLine void flush void write(char cbuf, int off, int len) 描述 T java.io.BufferedWriter.newLine() 方法写入分离器以缓冲的写入流。 声明 以下是java.io.BufferedWriter.newLine()方法的声明 public void newLine() 返回值 该方法没有返回值 异常 IOException − 如果发生I / O错误。 实例 以下示例显示了java.io.BufferedWriter.newLine()方法的用法。 package com.tutorialspoint; import java.io.BufferedWriter; import java.io.IOException; import java.io.StringWriter; public class BufferedWriterDemo { public static void main(String[] args) throws IOException { StringWriter sw =null; BufferedWriter bw = null; String s = "Hello World!!"; try { // create new string writer sw = new StringWriter(); // create new buffered writer bw = new BufferedWriter(sw); // write string sequence to buffered writer bw.write(s, 0, 5); // write new line to the buffered writer bw.newLine(); // write the next string sequence to buffered writer bw.write(s, 6, s.length()-6); // releases all bytes to the underlying stream bw.flush(); // print System.out.print(sw.getBuffer()); } catch(Exception e) { // if any I/O error occurs e.printStackTrace(); } finally { // releases system resources from the streams if(sw!=null) sw.close(); if(bw!=null) bw.close(); } } } 让我们编译并运行上面的程序,这将产生以下结果 Hello World!! void flush void write(char cbuf, int off, int len)