Question

JAVA编写一程序让其产生NumberFormatException异常，并对其进行捕获或者抛出。

Answer 1

楼上的方法已经写液散得很简单了，NumberFormatException就是那几个数据类型型埋亩包裹类出错时抛的异常卜森，如果想要个更直接，不求异常来源直接抛一个NumberFormatException异常。如下：
public class TestNFE {
public static void main(String[] args){
try{
throw new NumberFormatException();
}catch(NumberFormatException e){
System.out.println("I get the NumberFormatException");
}
}
}

Answer 2

import static java.lang.System.out;

public class TestNumberFormatException
{
public static void main(String[] args)
{
try{
String s="java";
int i=Integer.parseInt(s);
out.println(i);
}catch(NumberFormatException e){
out.println("出姿州现迹好蔽袜轮转换异常");
out.println(e.getMessage());
//e.printStackTrace();
}
finally{
out.println("finally!");
}
}
}

Answer 3

class dd
{
public static void main(String args[])
{
int sum,a;
String b;
a = 10;
sum = 0;
b = "卜春御20";
try
{
sum = a + b;
}
catch(NumberFormatException e)
{
//型岩处理森拦异常
}
}
}