1、定义一个点类Point，包含2个成员变量x、y分
别表示x和y坐标，2个构造器Point()和Point(int
x0,y0),以及一个movePoint（int dx,int dy）方法实
现点的位置移动，创建两个Point对象p1、p2，分
别调用movePoint方法后，打印p1和p2的坐标。[
必作题]
public static void main(String[] args) {
point p1=new point(1,2);
point p2=new point(1,2);
System.out.println("p1坐标为"+"("+p1.getX()+","+p1.getY()+")");
System.out.println("p2坐标为"+"("+p2.getX()+","+p2.getY()+")");
p1.movePoint(2,3);
p2.movePoint(3,4);
System.out.println("p1坐标为"+"("+p1.getX()+","+p1.getY()+")");
System.out.println("p2坐标为"+"("+p2.getX()+","+p2.getY()+")");
}
}
public class point {
private int x;
private int y;
public point() {
}
public point(int x, int y) {
this.x = x;
this.y = y;
}
public void movePoint(int x, int y){
this.x=x;
this.y=y;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
}
import java.util.Scanner;
class text{
public static void main(String[] args) {
Rectangle r=new Rectangle();
System.out.println("请输入矩形长度");
Scanner sc=new Scanner(System.in);
int length = sc.nextInt();
r.setLength(length);
System.out.println("请输入矩形宽度");
int width = sc.nextInt();
r.setWidth(width);
r.getAll();
r.getArea();
r.getPer();
}
}
public class Rectangle {
private int length;
private int width;
public Rectangle() {
}
public Rectangle(int length, int width) {
this.length = length;
this.width = width;
}
public int getLength(int i) {
return length;
}
public int getWidth() {
return width;
}
public void setLength(int length) {
this.length = length;
}
public void setWidth(int width) {
this.width = width;
}
public void getArea(){
System.out.println("面积为；"+width*length);
}
public void getPer(){
System.out.println("周长为；"+(width+length)*2);
}
public void getAll(){
System.out.println("长度为"+length+"宽度为"+width+"面积为"+width*length+"周长为"+(width+length)*2);
}
}
6、定义两个类，描述如下： [必做题]
• 6.1定义一个人类Person：
• 6.1.1定义一个方法sayHello()，可以向对方发出
问候语“hello,my name is XXX”
• 6.1.2有三个属性：名字、身高、年龄
• 6.1.3通过构造方法，分别给三个属性赋值
• 6.2定义一个Constructor类：
• 6.2.1创建两个对象，分别是zhangsan，33岁，
1.73；lishi，44，1.74
• 6.2.2分别调用对象的sayHello()方法。
public class Person {
String name;
int age;
double sg;
public Person(String name,int age,double sg) {
this.name=name;
this.age=age;
this.sg=sg;
}
public void sayHello() {
System.out.println("Hello,my name is "+name);
System.out.println("My age is "+age);
System.out.println("My height is "+sg);
}
}
public class Constructor {
public static void main(String[] args) {
Person p1=new Person("zhangsan",33,1.73);
Person p2=new Person("lisi",44,1.74);
p1.sayHello();
p2.sayHello();
}
}