文件名称:java 编程基础题
文件大小:102KB
文件格式:DOC
更新时间:2016-04-12 05:42:45
类 素数 回文数 杨辉三角形 写出一个类People,并由该类做基类派生出子类Employee和Teacher。其中People类具有name、age两个保护成员变量,分别为String类型和整型,且具有共有的getAge()成员方法,用于返回age变量的值,并编写一个两个参数的构造函数。Employee类具有保护成员String变量employeeNo,Teacher类有String类型的teano和zc变量,并分别为两个子类编写一个无参的构造函数。若使两个子类正常的编译,请在父类中解决该问题。 public class Employee extends People{ protected String employeeNo ; //construct method Employee() { } } package Exercise1; public class People { protected String name ; protected int age ; //construct method People() { } People(String name,int age) { this.name = name ; this.age = age ; } //getAge public int getAge() { return this.age ; } } package Exercise1; public class Teacher extends People{ protected String teano ; protected String zc ; //construct method Teacher() { } } package Exercise1; public class MainTest { public static void main(String[] args) { // TODO Auto-generated method stub Employee em = new Employee(); em.age = 20; em.employeeNo = "1234560"; em.name = "Jim" ; System.out.println("Employee : name :"+em.name+"age:"+em.age+"emplyeeNo:"+em.employeeNo); Teacher tea = new Teacher(); tea.age = 26; tea.name = "Tom" ; tea.teano= "456"; tea.zc = "Go" ; System.out.println("Teacher : name :"+tea.name+"age:"+tea.age+"teano:"+tea.teano+"zc:"+tea.zc); } } 题目:判断101-200之间有多少个素数,并输出所有素数。 public class SuShu { public static void main(String[] args) { int m; int i; int k=0; for(m=1;m<=100;m++) { for(i=2;i