【自动化__持续集成】___java___控制结构

 

一、if和switch语句代码如下

package com.wujianbo;
import java.util.Scanner;

public class Demo06 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Demo06 demo06= new Demo06();
		//demo06.branch();
		demo06.execif();
		

	}
　　　　public void execif(){
		Scanner sc= new Scanner(System.in);
		System.out.println("请输入年龄：");
		int age= sc.nextInt();
		if (age <= 20) {
			System.out.println("您好，骚年！");
		}
		else if (age <= 40) {
			System.out.println("您好，大哥！");
		}
		else if (age <= 60) {
			System.out.println("您好，大叔！");
		}
		else {
			System.out.println("您好，大爷！");
		}
		if (age == 45) {
			System.out.println("您好，强哥！");	
		}
		
	}

}

 

package com.wujianbo;
import java.util.Date;
import java.util.Scanner;

public class Demo06 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Demo06 demo06= new Demo06();
		//demo06.branch();
		//demo06.execif();
		demo06.execcase();
		
	}
public void execcase(){
		String x="";
		int d= new Date().getDate();
		System.out.println(d+"a");
		switch (d) {
			case 0:
				x = "今天是星期一";
				break;
			case 1:
				x = "今天是星期一";
				break;
			case 2:
				x = "今天是星期一";
				break;
			case 3:
				x = "今天是星期一";
				break;
			case 4:
				x = "今天是星期一";
				break;
			case 5:
				x = "今天是星期一";
				break;
			case 6:
				x = "今天是星期一";
				break;
			case 25:
				x = "今天是星期七";
				break;
		}
		System.out.println(x);
	}
}

 

 

二、for、while、do while的代码如下

 

public void exeFor(){
	int result= 0;
	//for (int i=1; i<=100; i++) {
	//	result += i;
	//}
	int i= 1;
	for (; i<=100 ;) {
		result += i;
		i++;
	}
	System.out.println(result);
}

 

public void exeWhile() {
	int i= 1;
	int result= 0;
	while (i<101) {
		result += i;
		i++;
	}
	System.out.println(result);
}

 

 

public void exeDowhile() {
	int i= 1;
	int result= 0;
	do {
		result += i;
		i++;
	}while (i<101);
	System.out.println(result);
　}