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Multiple Catch Block in Java

Theory

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Multiple Catch Block in Java

Multiple Catch Block sits inside exception handling. try holds risky code. catch runs backup code. finally runs cleanup (close file / connection) whether error happened or not.

throw sends an exception. throws declares a checked exception on the method. Empty catch blocks hide bugs — print or log the message.

Checked exceptions must be handled or declared. Unchecked (RuntimeException family) usually are not declared. Catch specific types first, then broader ones.

Let's take this on the board with one tiny Main class — no extra files. Output: Asha scored 72 then Pass. Real Main. Swap marks/name to show one idea from Multiple Catch Block in Java. Start from main, go line by line, and stop at each print. That output is the proof for Multiple Catch Block.

Exam tip

Explain Multiple Catch Block in Java as: definition → why → one code idea.

Example

// Multiple
public class Main {
  public static void main(String[] args) {
    int marks = 72;
    String name = "Asha";
    System.out.println(name + " scored " + marks);
    if (marks >= 40) System.out.println("Pass");
  }
}

Output: Asha scored 72 then Pass. Real Main. Swap marks/name to show one idea from Multiple Catch Block in Java.

Short notes

Deftry = risky code. catch = backup. finally = cleanup always.
Rulethrow = do it. throws = declare it on the method.
Diffchecked = handle or declare. unchecked = RuntimeException family.
TrapEmpty catch hides the real bug.

// Multiple public class Main { public static void main(String[] args) { int marks = 72; String name = "Asha"; System.out.println(name + " scored " + marks); if (marks >= 40) System.out.println("Pass"); } }

Multiple Catch Block in Java

Example

Short notes

Questions

Multiple Catch Block in Java

Example

Short notes

Questions