Java题目，高手麻烦帮忙做一下！
2.为Student类编写3个不同参数的构造方法，并进行测试。
3.按以下要求编写程序
(1) 编写Computer接口，接口中声明poweron() 方法
(2) 定义PC类和Laptop类实现Computer接口
(3) 编写PC类和Laptop类的测试程序，并调用其中的poweron()方法
4.对数组 a 的数据进行升序排序，然后输出排序后的结果。 展开
Studeng类：
package com.pan;
public class Student
{
private String name;
private int age;
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public int getAge()
{
return age;
}
public void setAge(int age)
{
this.age = age;
}
@Override
public String toString()
{
return "Student [name = " + name + ", age = " + age + "]";
}
}
main 测试类：
package com.pan;
public class Main
{
public static void main(String[] args)
{
Student student = new Student();
student.setName("张三");
student.setAge(20);
System.out.println(student);
}
}
2.
public class Student
{
private String name;
private int age;
public Student()
{
}
public Student(String name)
{
this.name = name;
}
public Student(String name, int age)
{
this.name = name;
this.age = age;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public int getAge()
{
return age;
}
public void setAge(int age)
{
this.age = age;
}
@Override
public String toString()
{
return "Student [name = " + name + ", age = " + age + "]";
}
}
测试类：
public class Main
{
public static void main(String[] args)
{
Student student = new Student();
System.out.println("student1 = " + student);
student = new Student("李四");
System.out.println("student2 = " + student);
student = new Student("李四", 20);
System.out.println("student3 = " + student);
}
}
3. Computer接口：
public class PC implements Computer
{
@Override
public void poweron()
{
System.out.println("pc poweron()");
}
}
PC类：
public class PC implements Computer
{
@Override
public void poweron()
{
System.out.println("pc poweron()");
}
}
Laptop类：
public class Laptop implements Computer
{
@Override
public void poweron()
{
System.out.println("Laptop poweron");
}
}
测试Main:
public class Main
{
public static void main(String[] args)
{
Computer pc = new PC();
pc.poweron();
Computer laptop = new Laptop();
laptop.poweron();
}
}
4. 来不急写了我下班了。。。。
第一题
Student类
public class Student {
private String StudentId;
private String StudentName;
private String StudentAge;
public String toString() {
return "姓名" + getStudentName() + "学号" + getStudentId() + "年龄"
+ getStudentAge();
}
/**
* @return the studentId
*/
public String getStudentId() {
return StudentId;
}
/**
* @param studentId
* the studentId to set
*/
public void setStudentId(String studentId) {
StudentId = studentId;
}
/**
* @return the studentName
*/
public String getStudentName() {
return StudentName;
}
/**
* @param studentName
* the studentName to set
*/
public void setStudentName(String studentName) {
StudentName = studentName;
}
/**
* @return the studentAge
*/
public String getStudentAge() {
return StudentAge;
}
/**
* @param studentAge
* the studentAge to set
*/
public void setStudentAge(String studentAge) {
StudentAge = studentAge;
}
}
主类调用Main.class
public class Main {
public static void main(String[] args) {
Student student = new Student();
student.setStudentAge("12");
student.setStudentName("李雷");
student.setStudentId("001");
System.out.print(student.toString());
}
}
962450847这个qq的you xiang，百度不让发地址！晕！连这两个字都不让打！
好的，马上发你
