What are jump tables in Java?

What are jump tables in Java?

Jump tables in Java are a programming construct used to optimize the selection of code paths, typically in switch statements.

How do they improve performance compared to if-else statements?

Jump tables allow for constant time complexity in selecting cases, while if-else statements can lead to linear time complexity.

Can you show me an example of a jump table in Java?

Sure! Here's a simple example:

int choice = 2;

switch (choice) {
    case 1:
        System.out.println("Option 1");
        break;
    case 2:
        System.out.println("Option 2");
        break;
    case 3:
        System.out.println("Option 3");
        break;
    default:
        System.out.println("Invalid option");
}

Are there any limitations to using jump tables?

Yes, jump tables are limited to integral types and can only be used with switch statements in Java.