Java程序第二次作业

1.编写“人”类及其测试类。
1.1 “人”类:
 类名:Person
 属性:姓名、性别、年龄、身份证号码
 方法:在控制台输出各个信息
1.2 测试类
 类名:TestPerson
 方法:main
 对象:(张三,男,18,430101010101010101)
(李四,女,18,123456789009876543)

源程序:

package zuoye;
public class person {
String name;
char sex;
int age;
String number;
public person(String name,char sex,int age,String number) {
this.name=name;
this.sex=sex;
this.age=age;
this.number=number;
}
}

测试类:

package zuoye;
public class Testperson {
public static void main(String[] args) {
person s1=new person("张三",'男',18,"430101010101010101");
person s2=new person("李四",'女',18,"123456789009876543");
System.out.println("姓名:"+s1.name+",性别:"+s1.sex+",年龄:"+s1.age+",身份证号码:"+s1.number);
System.out.println("姓名:"+s2.name+",性别:"+s2.sex+",年龄:"+s2.age+",身份证号码:"+s2.number);
}
}

截图:

2.编写“手机”类及其测试类。
2.1 “手机”类:
 类名:Phone
 属性:手机品牌、手机型号
 方法:在控制台输出手机信息
2.2 测试类
 类名:TestPhone
 方法:main
 对象:(华为,荣耀3C)
(联想,A3600D)
(小米,note)

源程序:

package zuoye;

public class phone {
String brand;
String model;
public void a(String brand,String model) {
this.brand=brand;
this.model=model;
System.out.println(brand+","+model);
}
}

测试类:

package zuoye;

public class testphone {

public static void main(String[] args) {
// TODO Auto-generated method stub
phone b=new phone();
b.a("华为","荣耀3C");
b.a("联想","A3600D");
b.a("小米","note");
}

}

截图:

3.编写“书籍”类及其测试类。
3.1 “书籍”类
 类名:Book
 属性:书名、书号、主编、出版社、出版时间、页数、价格
 方法:在控制台输出每本书的信息
3.2 测试类
 创建2个对象,并调用方法

源程序:

package zuoye;

public class book {
String name;
int number;
String editor;
String publish;
String time;
int page;
float price;
public book(String name,int number,String editor,String publish,String time,int page,float price){
this.name=name;
this.number=number;
this.editor=editor;
this.publish=publish;
this.time=time;
this.page=page;
this.price=price;
System.out.println(name+","+number+","+editor+","+publish+","+time+","+page+","+price);
}
}

测试类:

package zuoye;
public class Testbook {
private static book a;
private static book b;
public static void main(String[] args) {
a = new book("汤姆逊漂流记",001,"丹尼尔·笛福","xx出版公司","xxxx年xx月",1000,49.5f);
b = new book("老人与海",002,"海明威","xx出版社","xxxx年xx月",460,78.0f);
}

}

截图:

 

4.编写“圆柱体”类及其测试类。
4.1 “圆柱体”类
 属性:圆底半径、高,
 方法1:计算底面积
 方法2:计算体积
 方法3:打印圆底半径、高、底面积和体积。
4.2 测试类
 创建2个对象,并调用方法

源程序:

package zuoye;

public class yuanzhuti {
final float PI=3.14f;
float r;
float h;
public yuanzhuti(float r,float h) {
this.r=r;
this.h=h;
System.out.println("圆底半径="+r+",高="+h+",底面积="+PI*r*r+",体积="+PI*r*r*h);
}
}

测试类:

package zuoye;

public class Testyuanzhuti {

public static void main(String[] args) {
// TODO Auto-generated method stub
yuanzhuti y1=new yuanzhuti(2f,4f);
yuanzhuti y2=new yuanzhuti(3f,6f);
}
}

截图:

 心得体会:

本次作业难度不大,题目的类型也很相似,但十分考验细心与耐心,在做前几题时,由于马虎大意,导致程序频繁出错,差点心态爆炸。不过后来也还是慢慢一步一步找错误,终于把作业搞定。

原文地址:https://www.cnblogs.com/1121yjj/p/10666243.html