class BirthDate {
private int day;
private int month;
private int year;
public BirthDate(int d, int m, int y) {
day = d;
month = m;
year = y;
}
public void setDay(int d) {
day = d;
}
public void setMonth(int m) {
month = m;
}
public void setYear(int y) {
year = y;
}
public int getDay() {
return day;
}
public int getMonth() {
return month;
}
public int getYear() {
return year;
}
public void display() {
System.out.println
(day + " - " + month + " - " + year);
}
}看这个例子 其中
private int day;
private int month;
private int year;
是这个类的成员变量 还是这个类的对象?? 我是新手不好意思了 ,呵呵
//举例
public Class Car {
public static String band = "轿车";
private String name = null;
public Car(String name){
this.name = name;
} public String getName(){
return name;
}
}public static void main(String[] args) {
Car car1 = new Car("福特福克斯");
Car car2 = new Car("宝马");
System.out.println(car1.getName() + "\t" + car1.band);
System.out.println(car2.getName() + "\t" + car2.band);
}
private int month;
private int year;
这三个是类的成员变量,如果你使用 BirthDate birthDate = new BirthDate(12,7,2000);的语句
那么就是创建了一个birthDate对象,该对象是属于类BirthDate的对象