为什么我用或这个逻辑符号||会显示错误，求大神指导

Question

public class LeapYear {
public static void main(String args[]) {
int year =1989; //方法1
if(year%4==0&&year%100!=0)||(year%400==0)
System.out.println(year+"是闰年");
else System.out.println(year+"不是闰年");
}

}
错误提示是Exception in thread "main" java.lang.Error: Unresolved compilation problem:
Syntax error on token "||", if expected

at Test/hello.LeapYear.main(LeapYear.java:6)

Answer 1

   public static void main(String args[]) {
        int year = 1989; //方法1
        if ((year % 4 == 0 && year % 100 != 0)||(year % 400 == 0))
            System.out.println(year + "是闰年");
        else System.out.println(year + "不是闰年");
    }

需要在if的条件前后再加上一层括号