[英]Instance variables with a method in Java?
三角形方法具有3个实例变量。 int side1,side2,side3;
他们给了我我需要制作为公共三角形的方法(int s1,int s2,int s3)
我是否声明为:
public class triangle {
private int s1;
private int s2;
private int s3;
}
要么
public class triangle (int s1, int s2, int s3) {
}
谢谢
我将其与构造函数混合在一起。 弄清楚了,谢谢大家。
首先,如果方法名称与类名称相同,则称为constructor
,该方法在创建该类的新对象时调用。
public class Triangle {
private int s1; // This are the private variable which
private int s2; // are accessed by only object of
private int s3; // class triagnle.
public class Triangle (int s1, int s2, int s3) // This is a constructor which is called
{ // when you create a object with new keyword
this.s1 = s1; // like Triangle t = new Triangle(1,2,3);
this.s2 = s2;
this.s3 = s3;
}
}
public class triangle {
int s1;
int s2;
int s3;
public triangle (int s1, int s2, int s3) {
this.s1 = s1;
this.s2 = s2;
this.s3 = s3;
}
}
希望这可以帮助。 谢谢
最佳做法是
public class Triangle {
//atributes
private int s1;
private int s2;
private int s3;
//encapsulation
public int getS1() {
return s1;
}
public int getS2() {
return s2;
}
public int getS3() {
return s3;
}
public void getS1(int value){
this.s1 = value;
}
public void getS2(int value){
this.s2 = value;
}
public void getS3(int value){
this.s3 = value;
}
//constructor
public Triangle (int s1, int s2, int s3)
{
this.s1 = s1;
this.s2 = s2;
this.s3 = s3;
//do something
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.