what does the ":" mean in java code example

Example 1: java meaning

if (you.mean.equals("java programming language")) {
  System.out.println("Java is a class-based, object-oriented programming language");
} else if (you.mean.equals("java coffee")) {
  System.out.print("the term java comes from an island named 'java', a famous coffee source druing the 1600s ");
}

Example 2: java what is the meanning of

E - Element
K - Key
N - Number
T - Type
V - Value
S,U,V etc. - 2nd, 3rd, 4th types