已知 boolean result = false,则下面哪个选项是合法的:
boolean result; if(result){ }
不确定的时候,敲代码就好理解了
package com.learn.pra09;
public class Demo1 {
public boolean flag;
public static void main(String[] args){
boolean flag;
Demo1 d1 = new Demo1();
System.out.println(d1.flag);
System.out.println(flag);
}
}
编译不通过,错误为:The local variable flag may not have been initialized