1. Analog computer
package com.bdqn.demo;
import java.util.Scanner;
public class Calculator {
double num1;
double num2;
int choose;//Choose the calculation method
double he;//Calculate and
public void calc() {
switch(choose) {
case 1://calculate numbers
he=num1+num2;
break;
case 2:
he=num1-num2;
break;
case 3:
he=num1*num2;
break;
case 4:
he=(num1/num2);
break;
}
System.out.println(he);
}
public static void main(String[] args) {
Calculator co=new Calculator();//Create object
Scanner input=new Scanner(System.in);
System.out.println("Please enter the first number: ");
co.num1=input.nextInt();
System.out.println("Please enter the second number: ");
co.num2=input.nextInt();
System.out.println("Please select the calculation method: (1, addition 2, subtraction 3, multiplication 4, division)");
co.choose=input.nextInt();
co.calc();//Call the calculation method
}
}
2. Clock
package com.bdqn.demo;
public class Clock {
int year;//year
int yue; // month
int day;//day
int spot; // point
int divide;//divide
int second;//second
public void CurrentTime() {//Print method
System.out.println("Current time: "+year+"year"+yue+"month"+day+"day"+spot+"point"+divide+"minute"+second+"second");
}
public static void main(String[] args) {
Clock clo=new Clock();//Create object
clo.year=2015;
clo.yue=5;
clo.day=12;
clo.spot=10;
clo.divide=11;
clo.second=30;
clo.CurrentTime();//Call method
}
}
3. Develop the game
package com.bdqn.demo;
public class Games {
String name;//Name
int life;//life value, attack power
String type;//category
public void hero() {//method
System.out.println("I am a hero, my basic information is as follows: ");
System.out.println("Name: "+name+", HP: "+life);
}
public void arms() {
System.out.println("I am a weapon, my basic information is as follows: ");
System.out.println("Weapon name: "+name+", Attack power: "+life);
}
public void monster() {
System.out.println("I am a monster, my basic information is as follows: ");
System.out.println("Name: "+name+", HP: "+life+", Type: "+type);
}
public static void main(String[] args) {
Games game=new Games();//Create object
game.name="Li Xiaoxia";//Attribute assignment
game.life=300;
game.hero();//Call the method
game.name="Death Sickle";
game.life=12;
game.arms();
game.name="小龟";
game.life=300;
game.type="diving class";
game.monster();
}
}
4. Teacher class
package com.bdqn.demo;
public class Teacher {
String name;//Name
String major;//Professional
int age;//teaching age
public void lesson() {//method
System.out.println(name);
System.out.println("Professional direction: "+major);
System.out.println("Teach the course: write programs in java");
System.out.println("教龄："+age);
}
public static void main(String[] args) {
Teacher teacher=new Teacher();
teacher.name="Teacher Wang";//Assignment
teacher.major="computer";
teacher.age=5;
teacher.lesson();//Call the method
}
}