What does statically-typed mean in Java?

What does statically-typed mean in Java?

• A. Types are inferred automatically
• B. Variables can change type at runtime
• C. All variables must be declared with a type before they can be used
• D. There is no type checking

Answer: (C)

In Java, being statically-typed means every variable must be declared with a type before you can use it. The compiler knows each variable’s type at compile time and enforces that only values of that type (or explicitly cast or converted values) are assigned to it. That’s why you declare something like int age = 30; and you can’t later store a string in age without a conversion, because the types must remain compatible. If you need to convert, you’d use explicit conversions such as Integer.parseInt("42"). This early type checking catches errors before the program runs and helps with safety and performance. The idea that types are inferred automatically isn’t the standard description for Java, since you typically declare the type, and there is indeed type checking.

In Java, being statically-typed means every variable must be declared with a type before you can use it. The compiler knows each variable’s type at compile time and enforces that only values of that type (or explicitly cast or converted values) are assigned to it. That’s why you declare something like int age = 30; and you can’t later store a string in age without a conversion, because the types must remain compatible. If you need to convert, you’d use explicit conversions such as Integer.parseInt("42"). This early type checking catches errors before the program runs and helps with safety and performance. The idea that types are inferred automatically isn’t the standard description for Java, since you typically declare the type, and there is indeed type checking.