What can I do with the symbol : ?

Question

I don't know what's the function of the symbol : in a Java program. Can someone explain me?

Answer 1

It is also used in ternary operator;

<condition> ? <true-block> : <false-block>

Which is a shorthand for an `if-else` block written such as:

if(<condition>)
<true-block>
else
<false-block>

Answer 2

The only place I can think of now is that it is used in the enhanced for loop for generally traversing through the elements of an array.

Eg-
int [ ] arr = {1,2,3,4,5};
for (int a : arr)
System.out.println(a);

Answer 3

// and method reference ::

import java.util.stream.IntStream;
public class Program { public static void main(String[] args) {
IntStream.range(1, 6).forEach(
System.out :: println
);
}}