Question

java创建一个自定义异常类，并在一个方法中抛出，在该方法的catch处理程序中捕获它并重新抛出

Answer 1

public class MyException extends Exception{

static void sayHelloWorld()throws MyException{
try{
throw new MyException();
}catch(MyException e){
System.out.println("捕获到自定义异常");
throw e;
}
}
public static void main(String[] arg)throw Exception{
sayHelloWorld();
}
}

追问

为什么运行不出来啊？运行结果是？

追答

public class MyException extends Exception {

static void sayHelloWorld() throws MyException {
try {
throw new MyException();
} catch (MyException e) {
System.out.println("捕获到自定义异常");
throw e;
}
}

public static void main(String[] args) throws MyException {
sayHelloWorld();
}
}

Answer 2

class Test extends Exception{

public void myFun() throws Exception{
try{
//....
}catch(Exception e){
throw e;
}
}
}