public String getBrand() {
return brand; }
public void setBrand(String brand) { this.brand = brand; }
public String getColor() { return color; }
public void setColor(String color) { }
public double getSpeed() { return speed;
}
public void setSpeed(double speed) { this.speed = speed; }
public void run(){ } }
public class VehicleTest {
public static void main(String[] args) {
Vehicle a=new Vehicle(\,\,60); }
a.run(); }
if(this.speed>=60){
System.out.println(brand+\性能非常好！\); }
else{
System.out.println(brand+\性能不太好！\); }
this.color = color;
4 package qiche;
public class Vehicle { private String brand;
private String color;
private double speed = 0;
Vehicle(String b, String c, double s) { brand = b;
color = c;
speed = s; }
public String getBrand() { return brand; }
public void setBrand(String brand) { }
public String getColor() { return color; }
public void setColor(String color) { this.color = color; }
public double getSpeed() { return speed; }
public void setSpeed(double speed) { this.speed = speed; }
public void run() {
if (this.speed >= 60) {
System.out.println(brand + \性能非常好！\); } else {
System.out.println(brand + \性能不太好！\); }
this.brand = brand;
} }
public class Car extends Vehicle{
int loader;
Car(String brand,String color,double speed,int l){
super(brand,color,speed); loader=l;
}
public void run() {
if (super.getSpeed() >= 60) {
System.out.println(super.getBrand()+\性能非常好！\);
} else {
System.out.println( super.getBrand()+\性能不太好！\); } }
}
public class VehicleTest { }
public static void main(String[] args) {
Vehicle a=new Vehicle(\,\,60); }
a.run();
Car b=new Car(\轿车\,\,60,32); b.run();
5 package qiche;
public class Vehicle {
public String getColor() { return color; }
public void setColor(String color) { this.color = color; }
private String brand; private String color; private double speed = 0;
Vehicle(String b, String c, double s) { brand = b; }
public String getBrand() { return brand; }
public void setBrand(String brand) { this.brand = brand; }
color = c; speed = s;
public double getSpeed() { return speed; }
public void setSpeed(double speed) { this.speed = speed; }
public void run() {
if (this.speed >= 60) {
System.out.println(brand + \性能非常好！\); } else {
System.out.println(brand + \性能不太好！\);
} }
}
public class Car extends Vehicle{ int loader;
Car(String brand,String color,double speed,int l){ super(brand,color,speed); loader=l; }
public void run() {
if (super.getSpeed() >= 60) {
System.out.println(super.getBrand()+\性能非常好！\); } else {
System.out.println( super.getBrand()+\性能不太好！\); } } }
public class Truck extends Vehicle { double playload;
Truck(String brand, String color, double speed, double p) {
super(brand, color, speed); playload = p; }
public void run() {
if (super.getSpeed() >= 60) {
System.out.println(super.getBrand() + \性能非常好！\); } else {
System.out.println(super.getBrand() + \性能不太好！\);
} } }
public class VehicleTest { }
public static void main(String[] args) {
Vehicle a=new Vehicle(\,\,60); }
a.run();
Car b=new Car(\,\,60,2); b.run();
Truck c=new Truck(\,\,60,3456); c.run();
6 package dianju;
public abstract class CompareObject {
public abstract double x(int a,int b); public abstract double y(int m,int n);
public abstract void compareTo(); }
public class Position extends CompareObject{ public double x(int a,int b){
double p=Math.sqrt(a*a+b*b); return p;
}
public double y(int m,int n){ double q=Math.sqrt(m*m+n*n); return q; }
public void compareTo(){ if(this.x(3,5)>=this.y(4,6)){
}
else{
double t=this.y(4, 6)-this.x(3, 5); System.out.println(t); }
double t=this.x(3, 5)-this.y(4, 6); System.out.println(t);
} }
