改错题 下面的为错误语句 //Java3.javaimport java.io.*;public class Java3{\x05public static void main(String args[]){\x05\x05try{\x05\x05\x05InputStreamReader str;\x05\x05\x05BufferedReader br;\x05\x05\x05str=new InputStreamReader(System.in)

改错题 下面的为错误语句
//Java3.java
import java.io.*;
public class Java3{
\x05public static void main(String args[]){
\x05\x05try{
\x05\x05\x05InputStreamReader str;
\x05\x05\x05BufferedReader br;
\x05\x05\x05str=new InputStreamReader(System.in);
\x05\x05\x05//
\x05\x05}catch(ArithmeticException e){
\x05\x05\x05System.out.println(e);
\x05\x05}
\x05}
}

import java.io.*;
public class Java3 {
public static void main(String args[]) {
try {
InputStreamReader str;
BufferedReader br;
str = new InputStreamReader(System.in);
//
} catch (IOException e) {
e.printStackTrace();
}
}
}
//推荐下面的写法
import java.util.Scanner;
public class Java3{
public static void main(String args[]){
Scanner s = new Scanner(System.in);
System.out.println("Input a integer:");
int tempInt = s.nextInt();
System.out.println(tempInt+ "^2=" + (tempInt * tempInt));
}
}