1.考察for循环

package face_duixiang_first;

public class Demo{
    public static void main(String[] args){
        int x = 1;
        for(show('a'); show('b') && x<3; show('c')){
        show('d'); 
        x++;
        }
        }
        public static boolean show(char ch){
        System.out.print(ch);
        return true;
        }

}

输出结果:
图片说明