CODEWITHSUNDEEP
java
Adan Vem
Adan Vem

Reputation: 3

Java - try & catch in calling methods

I have a basic question in Java:

I have two methods: functionA & functionB. functionA calls functionB, and functionB rise an exception. The call to functionB is in try scope of functionA.

Now I also want that functionA will go to it catch scope.

There is any way to do that?

Upvotes: 0

Views: 5800

Answers (3)

srikanth yaradla
srikanth yaradla

Reputation: 1235

Not sure if this is what you want

 void functionB() throws MyException {
 try{
 .....
}Catch(MyException e){
//do something here;
 throw e;
}
}

void functionA() {
try {
    functionB();
} catch (MYException e) {
    //do something else to A here
}
}

Upvotes: 0

assylias
assylias

Reputation: 328598

If an exception is thrown in methodB and you catch it, one way to propagate it to methodA is to rethrow it:

void methodB() throws SomeException {
    try {
        //Something that can throw SomeException
    } catch (SomeException e) {
        //rethrow e
        throw e;
    }
}

void methodA() {
    try {
        methodB();
    } catch (SomeException e) {
        //this block will run if methodB throws SomeException
    }
}

But if you need that, you probably should not catch the exception in methodB at all and just let it propagate automatically to methodA:

void methodB() throws SomeException {
    //Something that can throw SomeException: don't catch it
}

void methodA() {
    try {
        methodB();
    } catch (SomeException e) {
        //this block will run if methodB throws SomeException
    }
}

Upvotes: 2

Joey
Joey

Reputation: 354406

Actually, that is how it works usually, provided that functionB doesn't catch the exception itself. Exceptions, when thrown, bubble up the call stack until a matching catch block is found.

Upvotes: 0

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