public class HelloWorld {
    public static void main(String[] args) {
		int score = 94;
		String sex = "女";
		String last;
        if (score>80){
            if (sex.equals("女")){
                last="进入女子组决赛";
            }else{
                last="进入男子组决赛";
            }
        }
        System.out.println(last);

运行失败

HelloWorld.java:13: error: variable last might not have been initialized
       System.out.println(last);
                          ^
1 error