java(访问权限)

public class Example4_15{
 private int money;
 Example4_15(){
  money=2000;
 }
 private int getMoney(){
  return money;
 }
 public static void main(String args[]){
  Example4_15 exa=new Example4_15();
  exa.money=3000;
  int m=exa.getMoney();
  System.out.println("money="+m);
 }
}

 

 

class Employee{
 private double salary=1800;
 public void setSalary(double salary){
  if(salary>1800&&salary<=6000){
   this.salary=salary;
  }
 }
 public double getSalary(){
  return salary;
 }
}
public class Example4_16{
 public static void main(String args[]){
  Employee zhang=new Employee();
  Employee wang=new Employee();
  zhang.setSalary(100);
  System.out.println("zhang的薪水:"+zhang.getSalary());
  wang.setSalary(3888);
  System.out.println("wang的薪水:"+wang.getSalary());
 }
}