Java Checked and unchecked exceptions

Checked Exceptions are called complie-time exceptions. checked exceptions will check at compile time by the compiler. For examples , IOException, SQLException, etc.

Example of IOException

try {

    FileReader file = new FileReader("myfile.txt"); // FileNotFoundException

} catch (FileNotFoundException exception) {

    System.out.println("FileNotFoundException caught: " + exception.getMessage());

}

UnChecked Exceptions are called run-time exceptions. unchecked exceptions will check at run time. For examples , NullPointerException, ArithmeticException, ArrayIndexOutOfBoundsException, etc.

Example of NullPointerException:

try {

    String str = null;
    System.out.println(str.length()); // NullPointerException

} catch (NullPointerException exception) {

    System.out.println("NullPointerException caught: " + exception.getMessage());

}