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I have this piece of code below. How do I initialize each element = false?
boolean[] seats = new boolean[10]
I saw a similar question. But, the second line didnt make sense to me (Can you explain the 2nd line?).
Boolean[] array = new Boolean[size];
Arrays.fill(array, Boolean.FALSE);
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An array of booleans are initialized to false and arrays of reference types are initialized to null. In some cases, we need to initialize all values of the boolean array with true or false. We can use the Arrays. fill() method in such cases.
in guaranteed to initialize the whole array with null-pointers of type char * . bool myBoolArray[ARRAY_SIZE] = { false }; char* myPtrArray[ARRAY_SIZE] = { nullptr }; but the point is that = { 0 } variant gives you exactly the same result. T myArray[ARRAY_SIZE] = {};
boolean user = true; So instead of typing int or double or string, you just type boolean (with a lower case "b"). After the name of you variable, you can assign a value of either true or false. Notice that the assignment operator is a single equals sign ( = ).
The default value for the elements in a boolean[] is false. You don't need to do anything.
The reason it's necessary for Boolean[] is because the default value is null.
To initialize to true, use the overload of Arrays.fill that accepts a boolean[].
boolean[] seats = new boolean[10];
Arrays.fill(seats, true);
See it working online: ideone
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A boolean is initialized to false by default. So you need not to do anything specific here. When you create an array of booleans and don't initialize it all the elements will be be false.
how do I initialize it to True then?
Simple Arrays.fill(array, Boolean.TRUE);
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