what do the square brackets mean? in Java

java methods double brackets
Supernaturalgirl 1967 picture Supernaturalgirl 1967 · Oct 23, 2014 · Viewed 16.8k times · Source

What does it mean when their are square brackets in front of double. For example double[] and is there any special way to use the return function when using them in a method.

For Example: 

public double[] MethodName(){

}

What is the type of the return value?

Answer

12341234 picture 12341234 · Oct 23, 2014

Square brackets [] would indicate an array. In your case of code:

public double[] MethodName(){ .... }

You have a public method MethodName which returns an array. Double indicates what type the array is, i.e. stores an array of objects of type double.

EDIT: Forgot about answering your return question. But for your line of code, MethodName would return an array of type double (which would depend on the implmentation inside the method body). Hope that helps (I'm new to Java too; climbing the SO rep ladder)

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