Question

"Variables in Java need not be declared and initialized before they are used." State True or False.

Hint:

In Java, always declare and initialize variables before using them to avoid compile-time errors.

Answer 1

In Java, all variables must be declared before they are used.
Declaration means specifying the data type and the name of the variable.
For example: int num; declares an integer variable named num.
If a variable is used without declaration, the Java compiler will throw a compilation error.
Also, local variables in Java must be explicitly initialized before use; otherwise, the code will not compile.
Java is a statically-typed language, meaning it checks variable types during compilation, unlike dynamically-typed languages such as Python.
Therefore, the statement given in the question is False.