java——写入到文件txt

package filetest;
import java.io.*;
public class writefile {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        PrintWriter out = null;
        File f = new File("c:\\temp3.txt");
        try{
            out = new PrintWriter(new FileWriter(f));
        }
        catch(IOException e){
            e.printStackTrace();
        }
        //由FileWriter实例化，则向文件中输出
        out.print("Hello World!"+"\r\n");
        out.close();

    }

}