+ - * / and % do arithmetic. When both sides of / are ints, the result is an int. 7 / 2 is 3, not 3.5. Make one side a double when you want a fraction.
== compares primitive values. For text, use equals, not ==. && and || stop as soon as the answer is known. && runs the right side only when the left side is true.
Example
Integer division drops the fraction. The double division keeps it. % is the remainder, so 7 divided by 2 leaves 1.
public class Ops {
public static void main(String[] args) {
System.out.println(7 / 2);
System.out.println(7 / 2.0);
System.out.println(7 % 2);
}
}Prefer < <= > >= for numbers. Do not write if (paid == true). Write if (paid). The boolean is already the condition.
