写了一个代码,代码如下,可以进行参考
public class sum {public static void main(String[] args) {
//创建一个Scanner的对象input
Scanner input = new Scanner(System.in)
//提示用户输入数据
System.out.print("请输入族孝一个整数")
//将输入的值赋给n
int n = input.nextInt()
//定义变量接收计算后的和
int sum = 0
//利用循环进行求和
for (int i = 0 i 兆掘稿<= n i++) {
sum+=i
}
//输出最后的和
System.out.println("从0一直到散蔽"+n+"的所有整数的和是:"+sum)
}
}
第一个:import java.util.Scanner
/**
* @author zhangdong
* @date 2018/4/24 16:14
*/
public class HomeWork1 {
public static void main(String[] args) {
System.out.println("请输入一个数字(0-3)")
Scanner scanner = new Scanner(System.in)
int num = scanner.nextInt()
switch (num) {
case 0:
System.out.println("0- 明天去打球")
break
case 1:
System.out.println("1- 明天去跑步")
做雹宏 break
case 2:
肆如 System.out.println("2- 明天去放鸭")
break
case 3:
System.out.println("3- 明天去爬山")
break
default:
System.out.println("其他-明天呆在家里")
break
}
}
}
第二个:
import java.util.Scanner
/**
* @author zhangdong
* @date 2018/4/24 16:18
*/
public class HomeWork2 {
public static void main(String[] args) {
System.out.println("请输入一个数字(1-7)")
Scanner scanner = new Scanner(System.in)
int num = scanner.nextInt()
switch (num) {
case 1:
System.out.println("星期一")
break
case 2:
System.out.println("星期二")
break
case 3:
System.out.println("星期三")
break
case 4:
System.out.println("星期四")
break
case 5:
System.out.println("星期五")
break
case 6:
System.out.println("星期六")
break
case 7:
System.out.println("星期日")
break
default:
System.out.println("输入错误!")
break
}
}
}
第三个:
/**
* @author zhangdong
* @date 2018/4/24 16:20
*/
public class Car {
private String name
private String color
private String placeOrigin
public Car(String name, String color, String placeOrigin) {
this.name = name
this.color = color
this.placeOrigin = placeOrigin
}
public String getName() {
return name
}
public void setName(String name) {
this.name = name
}
public String getColor() {
return color
}
public void setColor(String color) {
this.color = color
}
public String getPlaceOrigin() {
return placeOrigin
}
public void setPlaceOrigin(String placeOrigin) {
this.placeOrigin = placeOrigin
}
public void run() {
System.out.println("汽车正在以50km/s的速度行驶中")
}
public void run(int speed) {
System.out.println("汽车正在以"纯册 + speed + "km/s的速度行驶中")
}
@Override
public String toString() {
return "汽车基本信息:" +
" 车名:'" + name + '\'' +
" 颜色:'" + color + '\'' +
" 产地:'" + placeOrigin + '\'' +
'}'
}
public static void main(String[] args) {
Car car = new Car("法拉利", "黑色", "德国")
System.out.println(car.toString())
car.run()
car.run(80)
}
}
public class CLSS_ch2 {public static void main(String[] args) 猜轿斗{
int sum = 0
for (int 帆渣i 穗磨= 1 i <= 100 i++) {
if (i % 10 == 3)
continue
sum += i
}
System.out.println(sum)
}
}
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