CODEWITHSUNDEEP
javaconstructorthrows
Angelo Brown
Angelo Brown

Reputation: 19

Throws in method signature of constructor

I have two constructors below and both executed just fine. Normally, Intellij will fuss at me if I didn't include throws in the method signature of the constructor, but in this particular instance, Intellij didn't bring up any errors. What would be the cause of this? I was taught to always put throws in the method signature if that method were to throw an exception. Is this a bug with Intellij?

protected PayCalculator(double payRate) throws IllegalArgumentException {
        if (payRate >= 0)
            this.payRate = payRate;
        else
            throw new IllegalArgumentException("Pay rate cannot be less than zero");
    }

// versus

protected PayCalculator(double payRate) {
        if (payRate >= 0)
            this.payRate = payRate;
        else
            throw new IllegalArgumentException("Pay rate cannot be less than zero");
    }

Upvotes: -1

Views: 188

Answers (1)

Severin Nitsche
Severin Nitsche

Reputation: 158

An IllegalArgumentException is a subtype of a RuntimeException. So just like an ArrayIndexOutOfBoundsException it doesn't need to be caught or thrown. Think of it like this snippet of Code

int foo() {
  int[] bar = new int[2];
  return bar[10];
}

This inevitably will throw an ArrayIndexOutOfBoundsException but it'll compile just fine.

Upvotes: 1

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