class Student{
  private String strName;
  private int intAge;
  private boolean blSex;
  static int numOfStudent;
  String getName() {
    return strName;
  }
  int getAge() {
    return intAge;
  }
  boolean getSex() {
    return this.blSex;
  }
  //添加構造函數
  public Student(String name, int age,boolean sex){
    strName = name;
    intAge = age;
    blSex = sex;
    numOfStudent+=1;//統計創建的類對象
  }
}
class StudentDemo7{
      public static void main(String args[]) {
        Student Student1=new Student("董曉飛",22,true);
        Student Student2=new Student("李娜",21,false);
        System.out.println(Student1.numOfStudent);//查看對象1的公享變量
        System.out.println(Student2.numOfStudent);//查看對象2的公享變量
    }
 }