第四次实训作业

01.电表管理package aaa;

package disici;
public class dianbiao {
     private int last;
     private int now;
     public dianbiao(){
	}

  public dianbiao(int last,int now) {
	this.last=last;
	this.now=now;
  }
  public int getlast(int last) {
	return last;
  }
 public int getnow(int now) {
	return now;
 }
 public void setlast(int last) {
	this.last=last;
 }
 public void setnow(int now) {
	this.now=now;
 }
 public void print(){

System.out.println("上月用电度数："+last+"本月用电度数："+this);

}

}

　　01.1电表测试

package disici;
import java.util.*;
public class dianbiaotest {
 public static void main(String []args) {
	 dianbiao e1=new dianbiao();
	 Scanner n=new Scanner(System.in);
	 System.out.println("请输入上月的用电情况：");
	 int last=n.nextInt();
	 n.nextLine();
	 System.out.println("请输入本月的用电情况：");
	 int now=n.nextInt();
	 e1.setlast(last);
	 e1.setnow(now);
	 int mon=0;
	 mon=(int) (now*1.2);
	 System.out.println("本月的电费为："+mon);
	
 }
}

　　02.圆柱体

package disici;
import java.util.*;
public class yuanzhu {
	private int r;
	private int h;
public yuanzhu(int r,int h){
	this.h=h;
	this.r=r;
}
public void setr(int r) {
	this.r=r;
}
public int getr() {
	return r; 
}
public void seth(int h) {
	this.h=h;
}
public int geth() {
	return h;
}
public static double s(int r) {
	return r*r*3.14;
}
public static double V(int r,int h) {
	return r*r*3.14*h;
}
public static void main(String []args) {
	System.out.println("请输入半径：");
	Scanner in=new Scanner(System.in);
	int r=in.nextInt();
	in.nextLine();
	System.out.println("请输入高：");
	int h=in.nextInt();
	in.nextLine();
	yuanzhu e1=new yuanzhu(r,h);
	e1.setr(r);
	e1.seth(h);
	System.out.println("底面积："+s(r)+"体积："+V(r, h));
	
}


}

　　3.运算法则

package disici;
import java.util.*;
public class yunsuan {
	    private int a;
		private int b;
	public yunsuan(int a,int b){
		this.a=a;
		this.b=b;
	}
	public void seta(int a) {
		this.a=a;;
	}
	public int geta(){
		return a; 
	}
	public void setb(int b) {
		this.b=b;
	}
	public int getb() {
		return b;
	}
	public static int jia(int a,int b) {
		return a+b;
	}
	public static int jian(int a,int b) {
		return a-b;
	}
	public static int cheng(int a,int b) {
		return a*b;
	}
	public static int chu(int a,int b) {
		return a/b;
	}
	public static void main(String []args) {
		System.out.println("请输入数值1：");
		Scanner in=new Scanner(System.in);
		int a=in.nextInt();
		in.nextLine();
		System.out.println("请输入数值2：");
		int b=in.nextInt();
		in.nextLine();
		yunsuan e1=new yunsuan(a,b);
		e1.seta(a);
		e1.setb(b);
		System.out.println("加："+jia(a,b)+"减："+jian( a, b)+"乘："+cheng(a, b)+"除："+chu(a,b));
		
	}




}