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public class circle
{
double circle1;
double Xvalue;
double Yvalue;
double radius;
public double area = (3.14*(this.radius * this.radius));
public double getArea()
{
return area;
}
}
//这是我将创建对象如何调用一个实例方法在另一类
public class tester
{
public static void main(String args [])
{
circle circle1 = new circle();
circle1.Xvalue = 1;
circle1.Yvalue = 2;
circle1.radius = 4;
System.out.println(getArea());
//im not too sure why the print statement won't print the method getArea.
}
}
另外值得一提的是与常规类的名称应该大写坚持圈而不圆,而不是测试仪测试器 –
'nameOfVariableContainingPointerToInstance.nameOfInstanceMethod(。参数);'(在C/C++中用''替换'''''',并且整个事情在Objective-C中开启了它的耳朵。) –