Page 338 - Computer_Science_F5

// Next for prefix when x is reset to 10
x = 10;
// Using ++x Chapter Five: Object oriented programming with Java
int y2 = ++x;
FOR ONLINE READING ONLY
System.out.println(“Answer after ++x: “ + y2); // Output: 11
System.out.println(“Incremented value of x: “ + x); // Output: 11
}
}

Output:

Figure 5.7: Increment and decrement

When an increment or decrement operator comes before its operand, Java executes
the operation before retrieving the operand’s value for the remaining expression.
However, if the operator comes after its operand, Java fetches the operand’s value
first and then performs the increment or decrement operation. For example in the
first case (x++) , y1 is set to 10 while still x becomes 11. For the second case, (++x),
y2 is set to 11 when x will still be 11.

To see more about how the program works in Java operators, write the following
Program Example 5.6 in any editor then compile and run the program in JDK using
cmd.exe:

329
Student’s Book Form Five

Computer Science Form 5.indd 329 23/07/2024 12:34