Java instance variable declare and Initialize in two statements

Question

Hi I\'m having problem with initialization in java, following code give me compile error called : expected instanceInt = 100; but already I have declared it. If these thing

Answer 1

According to the Java Language Specification:

A class body may contain declarations of members of the class, that is, fields (§8.3), classes (§8.5), interfaces (§8.5) and methods (§8.4). A class body may also contain instance initializers (§8.6), static initializers (§8.7), and declarations of constructors (§8.8) for the class.

However, the statement

instanceInt = 100;

is none of those things, therefore it is not allowed as part of a class body. What you need to do is this:

int instanceInt = 100;

This is allowed because it is a field declaration that includes a variable initializer.