java学习24天2020/7/29

一.

import java.util.Scanner;

public class Demol {
	public static void main (String [] args) {
		Scanner in=new Scanner(System.in);
		while(true)
		{
			System.out.print("1 堆溢出2 栈溢出");
			String str =in.nextLine();
			if(str.equals("1"))
			{
				char[] chs=new char[0x7fffffff];
			}
			else if(str.equals("2"))
			{
				f();
			}
		}
	}
	public static void f() {f();}
}

 

public class A
{
public void method1 throws Excetpion
{
//可能有一个SQLException
}
}
//调用类捕获异常
public class B
{
private A a;
try
{
a.method1();
}
catch(Exception e)
{
System.out.println(e);
}

}

 二.没什么问题

三12