Keywords in Java

What are Keywords in Java?

• Reserved: They are part of the Java syntax and cannot be used as identifiers. Trying to do so will result in a compilation error.
• Lowercase: All Java keywords are written in lowercase.
• Special Meaning: Each keyword has a specific function that the Java compiler understands.

// This code will not compile because `int` is a keyword.
int int = 10; // Compile-time error: ' expected'
        

• Data Types: byte, short, int, long, float, double, char, boolean, void.
• Control Flow: if, else, switch, case, default, for, while, do-while, break, continue, return.
• Class and Object Related: class, interface, enum, extends, implements, new, this, super, instanceof.
• Access & Other Modifiers: public, private, protected, static, final, abstract, synchronized.
• Exception Handling: try, catch, finally, throw, throws.

Note: While true, false, and null seem like keywords, they are technically considered literals. Similarly, const and goto are reserved words but are not used in the language.