lnteger x=23456;SystemoutprintInxtoStringsubstring24;

The output of this code will be "45".

Explanation:

• The variable x is initialized to the integer value 23456.
• The toString() method is called on x, which converts it to a String representation: "23456".
• The substring(2,4) method is called on this String, which returns a new String containing the characters starting at index 2 (inclusive) and ending at index 4 (exclusive): "45".
• Finally, this String is printed to the console using the println() method.