I/O流与异常

package TestFile;
import java.io.*;
import java.util.Scanner;


public class TestFilesanzhongxie6 {


public static void main(String[] args) throws FileNotFoundException ,IOException{
// TODO Auto-generated method stub
File file1=new File("D:\\","HelloWorld1.txt");
File file2=new File("D:\\","HelloWorld2.txt");
File file3=new File("D:\\","HelloWorld3.txt");
file1.createNewFile();
file2.createNewFile();
file3.createNewFile();
@SuppressWarnings("resource")
Scanner sc=new Scanner(System.in);
System.out.println("输入:");
PrintWriter a=new PrintWriter(new FileOutputStream(file1));
BufferedWriter b=new BufferedWriter(new FileWriter(file2));
FileOutputStream c=new FileOutputStream(file3);
String inputString=sc.next();
a.print(inputString);
a.close();
b.write(inputString);
b.close();
c.write(inputString.getBytes());
c.close();
System.out.println();


}


}