当我从另一个类调用对象时出现错误，即“找不到符号”

Question

my program gives error when i try to compile it. I don't know whats wrong. Please help me. It gives error in 21st and 22nd line. Code is

class Rectangle {

    int length;
    int breadth;

    void setdata(int x, int y) {
        length = x;
        breadth = y;
    }

    int Area() {
        int rectarea = length * breadth;
        return rectarea;
    }
};

class Calculate {

    public static void main(String args[]) {
        Cal obj = new Cal();
        obj.setdata(3, 4);
        int result = obj.Area();
        System.out.println("Result is " + result);

    }
};

It gives error in obj.setdata(3,4); and int result=obj.Area(); . Please help me and tell me where i am doing wrong.

Answer 1

The name of your class is Rectangle and not Cal so replace this piece :

Cal obj=new Cal();

By:

Rectangle obj = new Rectangle(); 

Note

It is not require to set ; after } like you do in the end of your classes }; .

Hope this can help you