怎么寫java代碼？

只要自己的電腦安裝了jdk環(huán)境，任何地方都可以進行java代碼的編寫的，記事本也可以。

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java實現(xiàn)風(fēng)車旋轉(zhuǎn)，為嘛我的畫出來時一個圓在旋轉(zhuǎn)

畫之前加上g.clearRect(0, 0, getWidth(), getHeight());

不然你上一次畫的還灶搭會呈現(xiàn)出來

這樣呢，就會閃爍，需要使用雙緩沖來解決了。廳亮

需要扮辯寬請追問。

請問如何用Java編寫一個汽車類Car

public class Car {

private String color;//顏色

private int door;//車門數(shù)量

private float speed;//車速

public Car(){

this.color = "紅色";

this.door = 3;

this.speed = 110;

}

public Car(String color, int door, float speed) {

this.color = color;

this.door = door;

this.speed = speed;

}

public void start(){

//汽車啟動。輸出汽車已啟動，并輸出汽車的各個屬性

System.out.println("汽車已啟動，汽車顏色為"+color+",車門數(shù)為"+door+",車速為"+speed);

}

public void speedUp(float speed){

//加速

System.out.println("汽車加速到"+speed+"km/h");

}

public void shutDown(float speed){

//減速

System.out.println("汽車減速到"+speed+"歲如凳km/h");

}

public void brake(){

//剎車

System.out.println("已剎車");

}

}

public class Test {

public static void main(String[] args){

Car car = new Car();

car.start();

car.speedUp(100);

car.shutDown(60);

car.brake();

Car car1 = new Car("乎旅白色",4,20.2F);

car1.start();

car1.speedUp(100);

car1.shutDown(60);

car1.brake();

}

}

運行橡游結(jié)果

用JAVA編寫一個程序，要求如下：

實現(xiàn)代碼如下：

Student類：

public class Student {

private String name;

private String sex;

private int age;

private double chinese;

private double math;

private double english;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getSex() {

return sex;

}

public void setSex(String sex) {

this.sex = sex;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public double getChinese() {

return chinese;

}

public void setChinese(double chinese) {

this.chinese = chinese;

}

public double getMath() {

return math;

}

public void setMath(double math) {

this.math = math;

}

public double getEnglish() {

return english;

}

public void setEnglish(double english) {

this.english = english;

}

}

-----------------------------------------------------------------

StudentTest類：臘譽（測試類）

import java.util.Scanner;

public class StudentTest {

public static void main(String[] args) {

Student student = new Student();

Scanner sc = new Scanner(System.in);

System.out.println("請輸入姓名：");

student.setName(sc.next());

System.out.println("請輸入性別：");

student.setSex(sc.next());

System.out.println("請輸入年齡：");

student.setAge(sc.nextInt());

System.out.println("請滾衫輸入語文成績、數(shù)學(xué)成績、英語成績：");

student.setChinese(sc.nextDouble());

student.setMath(sc.nextDouble());

student.setEnglish(sc.nextDouble());

Double count = student.getChinese()+ student.getMath()+student.getEnglish();

System.out.println("姓名："+student.getName()+" 性別："+student.getSex()+" 年齡："+student.getAge());

System.out.println("總分："+count+" 平均分："+count/3);

}

}

運行結(jié)果為大局腔：