تمارين بلغة الجافا ...حساب المسافة بين نقتطين Write the code for the class MyPoint. Also write a test program

من طرف **أحمد مناع** الخميس مايو 07, 2020 3:07 pm

السؤال :

1_Write the code for the class MyPoint. Also write a test program (called TestMyPoint) to test all the methods defined in the class.

The Assignment begins by instructing us to create the MyPoint class that contains:
* Two instance variables x (int) and y (int).
* A "no-argument" (or "no-arg") constructor that construct a point at (0, 0).
* A constructor that constructs a point with the given x and y coordinates.
* Getter and setter for the instance variables x and y.
* A method setXY() to set both x and y.
* A toString() method that returns a string description of the instance in the format "(x, y)".
* A method called distance(int x, int y) that returns the distance from this point to another point at the given (x, y) coordinates.
* An overloaded distance(MyPoint another) that returns the distance from this point to the given MyPoint instance another.

2_2. Write a program that allocates 10 points in an array of MyPoint, and initializes to (1, 1), (2, 2), ... (10, 10).
* Hints: You need to allocate the array, as well as each of the ten MyPoint instances.
* MyPoint[] points = new MyPoint[10]; // Declare and allocate an array of MyPoint
* for (......) {
* points[i] = new MyPoint(...); // Allocate each of MyPoint instances
* }

هذا البرنامج يتطلب انشاء بفئة باسم MyPoint لتعين نقطة على مستوي الاحداثى السينى و الصادي ويتطلب طريقتين لحساب المسافة بين نقتطين ...الاولى لحساب المسافة بين نقطة و اخرى ....والطريقة الثانية لحساب المسافة بين نقطة و احداثيات نقطة اخري هذا فى المطلوب الاول أما المطلبو الثاني يتطلب انشاء مصفوفة نقاط تبدء من النقطة (1,1) وحتى النقطة ( 10,10)

و البرنامج على النحو التالى :

الكود:: public class MyPoint { int x , y; public static void main(String[] args) { //A MyPoint p1 = new MyPoint(); System.out.println(p1); p1.setX(8); p1.setY(6); System.out.println("x is :" +p1.getX()); System.out.println("y is :" +p1.getY()); p1.setXY(3, 0); System.out.println(p1.getXY()[0]); System.out.println(p1.getXY()[1]); System.out.println(p1); MyPoint p2 = new MyPoint(0,4); System.out.println(p2); System.out.println(p1.distance(p2)); System.out.println(p2.distance(p1)); System.out.println(p1.distance(5, 6)); System.out.println(p1.distance()); // B MyPoint[] p3 = new MyPoint[10]; for(int i = 0; i < p3.length; i++) { p3[i] = new MyPoint(1+i,1+i); System.out.println(p3[i]); } } public MyPoint(){ this.x = 0; this.y = 0;} public MyPoint(int x, int y) { this.x = x; this.y = y; } private int getX(){ return this.x; } private void setX(int x){ this.x=x; } private int getY(){return this.y; } private void setY(int y){this.y=y; } private int[] getXY() { return new int[] {x, y}; } private void setXY(int x,int y){ this.x=x;this.y=y; } @Override public String toString(){ return String.format("("+ this.x +","+ this.y +")"); } public double distance() { int xDiff = this.x ; int yDiff = this.y ; return Math.sqrt(xDiff*xDiff + yDiff*yDiff); } public double distance(int x, int y) { int xDiff = this.x - x; int yDiff = this.y - y; return Math.sqrt(xDiff*xDiff + yDiff*yDiff); } public double distance(MyPoint another) { int xDiff = this.x - another.x; int yDiff = this.y - another.y; return Math.sqrt(xDiff*xDiff + yDiff*yDiff); } }

1	#الحديثة
2	#الدورات
3	#موقع_لي_نور_الإلكتروني
4	#java
5	#datagridview
6	#سكن
7	#عقار
8	#عقارات
9	#استثمار
10	#الامارات

تمارين بلغة الجافا ...حساب المسافة بين نقتطين Write the code for the class MyPoint. Also write a test program

تمارين بلغة الجافا ...حساب المسافة بين نقتطين Write the code for the class MyPoint. Also write a test program

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