Java Projects - Second Edition

Variables

In Java, just like in almost any programming language, we use variables. The variables in Java are typed. This means that a variable can hold a value of a single type. It is not possible for a variable to hold an int type at some point in the program and later a String type. When variables are declared, their type is written in front of the variable name. When a local variable gets the initial value on the line where it is declared, it is possible to use a special reserved type named var. It means the type that is exactly the same as the type of the expression on the right-hand side of the assignment operator.

This is how the code looks like:

var n = names.length;

It can also be written as follows:

int n = names.length;

This is ...