秘密森林拍摄花絮:急求JAVA代码分析。看看错误该怎么改呀，谢谢了

import java.io.*;//修改导入io包

public class Func1
{
public static void main(String args[]) throws IOException//错误Exception 抛出
{
//去掉int br,br1,s1,s2;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s1 = br.readLine();
int num = Integer.parseInt(s1);
//一个键盘输入流就可以了去掉BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
String s2 = br.readLine();//修改任就用br
int num1 = Integer.parseInt(s2);
for(int i=0;i<num;i++)
{
for(int j=0;j<num2;j++)
{
System.out.print("*");
}
System.out.println();
}
}
br.close();//关闭键盘输入
}

改了一下，可以运行了
不过readLine我还不会用，呵呵
要加个错误处理，但我还不会写

import java.io.*;

public class test
{
public static void main(String args[])
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s1 = "5";
int num = Integer.parseInt(s1);
BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
String s2 = "5";
int num1 = Integer.parseInt(s2);
for(int i=0;i<num;i++)
{
for(int j=0;j<num1;j++)
{
System.out.print("*");
}
System.out.println();
}
}
}