简单理解 + 的优先级大于 == !=
为方便大家理解请先思考这个表达式计算结果是什么？是 false 还是 s1 == s2 is:true 呢？public class Test { public static void main(String[] args) { String s1 = "i code"; String s2 = "i code"; System.out.println("s1 == s2 is:" +
