Thread: who can help me write this program?

The UML diagram of the Rectangle class of type.lib contains the following two entries in the method compartment:
getCircumference() : int
hashCode() : int

write the app that starts by prompting for and reading the width and height of a rectangle, both of type int. the app then creates a rectangle object using the Rectangle class of type.lib. finally the app invokes the above two methods and outputs their returns. Here is a samlple run:
Enter the width: 3
Enter the height: 4
The return of getCircumference is: 14
The return of hashcode is: 95

What have you got so far?

public class Rectangle
{
private int width;
private int height;
public Rectangle(int width, int height)
{
Rectanlge x = new Rctangle(int width, int height);
int x = getCircumference();

}

}

These are weird specifications. Why would a Rectangle class have a "getCircumference" method? Rectangles have perimeters, not circumference. Your Rectangle class is off to a good start. It looks like you defined the constructor (that public Rectangle(in width, int height) method, but the body of that method isn't correct. A constructor is a special function that is automatically invoked when you create an object. I think the code you've written will just create an endless loop (if you fix those misspellings of Rectangle).

The code inside there should be written outside the class, inside your main function. You also need to use dot notation to access a class's method or variable. Such as x.getCircumference();