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/* Increment and Decrement Operators Example This example shows how to use Java increment operator (++) and decrement (--) operator. */ public class IncrementDecrementOperatorExample { public static void main(String[] args) { /* * Java increment operator ++ increases its operand's value by one * while decrement operator -- decreases its operand's value by * one as given below. */ int i = 10; int j = 10; i++; j++; System.out.println("i = " + i); System.out.println("j = " + j); /* * Increment and decrement operators can be used in two ways, * postfix (as given in above example) and prefix. * * In normal use, both form behaves the same way. However, when they * are part of expression, there is difference between these * two forms. * * If prefix form is used, operand is incremented or decremented * before substituting its value. * * On the other hand, if postfix form is used, * operand's old value is used to evaluate the expression. * * Simple example would be, */ /* * Here, value of i would be assigned to k and then its * incremented by one. */ int k = i++; /* * Here, value of j would be incremented first and then * assigned to j. */ int l = ++j; System.out.println("k = " + k); System.out.println("l = " + l); } } /* Output would be i = 11 j = 11 k = 11 l = 12 */ |
/*
* Here, value of j would be incremented first and then
* assigned to k.
*/
should be
/*
* Here, value of j would be incremented first and then
* assigned to l.
*/