JAVA实现将控制台输入的字符串保存到文件中

import java.io.FileNotFoundException;import java.io.PrintWriter;import java.util.*;public class PrintWriterTest{public static void main(String[] args) throws FileNotFoundException{Scanner in = new Scanner(System.in);// get file nameSystem.out.print("Input filename:");String filename = in.nextLine();// build PrintWriterPrintWriter out = new PrintWriter(filename);//System.out.print("Input content you want to save, 'Q' for quit");String line = in.nextLine();while(!line.equals("Q")){out.println(line);line = in.nextLine();}out.close();in.close();}} 

注意，要关闭PrintWriter和Scanner。如果不关闭PrintWriter，输入内容不会保存到文件中。