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Java

Posted by Bianca Christian
Bianca Christian
3,524 Points

I dont understand how 'if(isHit == true){ hits += letter; } why is it not just hit = letter?

public boolean applyGuess(char letter){

boolean isHit = answer.indexOf(letter) != -1;
if (isHit == true) {
  hits += letter;
} else {
  misses += letter;
}
return isHit;

i understand you have to add the letter to hits but I'm not sure how += is performing this

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

The += operator is a shorthand that sets the variable on the left equal to itself + whatever is on the right. In other words

hits += letter;

Is the same as:

hits = hits + letter;

Or put a bit more simply it is a fast way of adding something to a variable. If you used the = operator instead then you would replace whatever was stored in the variable with the new value, rather than adding to the existing value.