How do the post increment(i++) and pre increment operators(++i) work in Java?

Question

Can someone explain to me the output of this Java code

int a=5,i;

i=++a + ++a + a++;

i=a++ + ++a + ++a;

a=++a + ++a + a++;

System.out.println(a);

System.out.println(i);

Answer 1

a=5;

i=++a + ++a + a++;

This means  i=6+7+7;

a=5

i=a++ + ++a + ++a;

This means 5+7+8;

The main point is ++a increments the values and immediately returns it.

a++ increments the value but returns the unchanged value. It is executed later.

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