Development principles of simple Java classes:
1. The class name must have practical meaning;
2. The attributes in the class need to be encapsulated privately;
3. To encapsulate properties, you need to write setter and getter methods;
4. Several construction methods can be defined, but one parameterless construction method must be retained;
5. In the class No output operation is allowed and must be output as a return value;
The code is as follows:
//定义一个员工类，包括：员工编号，姓名，工作，薪水以及补贴
class Emp{
private int empno;
private String ename;
private String job;
private double sal;
private double comm;
public Emp(){}
public Emp(int no,String name,String j,double s,fouble c){
setNo(no);
setName(name);
setJob(j);
setSal(s);
setComm(c);
}
public int setNo(int no){
empno = no;
}
public String setName(String name){
ename = name;
}
public String setJob(String j){
job = j;
}
public double setSal(double s){
sal = s;
}
public double setComm(double s){
comm = s;
}
public String getValue(){
return "编号:"+empno+"姓名:"+ename+"工作:"+job+"薪水:"+sal+"补贴:"+comm;
}
}
//调用员工类并输出员工基本信息
public class mainDemo{
public static void main(String args[]){
Emp emp = new Emp("1","张三","清洁",3000,0);
System.out.println(emp.getValue());
}
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