class Test{ private: static int x; public: static int getX( ); }; Int Text::x=10 //将x的值初始化为10 ② {return x;} //定义静态成员函数

这是一个 C++ 的类定义。其中包含了一个私有成员变量 x 和一个公有的静态成员函数 getX()。

静态成员变量 x 被定义为私有，只能在类内部访问。它被初始化为 10，即在类外部通过 "Int Text::x=10" 进行初始化。

静态成员函数 getX() 被定义为公有，可以在类外部使用。它的作用是返回静态成员变量 x 的值。

注意，静态成员函数不能访问非静态成员变量，因为它没有 this 指针。而静态成员变量可以被静态成员函数和非静态成员函数访问。

相关问题

用Java写并逐句翻译：定义Point类描述屏幕上的一个点。该类包括点的x和y两个坐标，及对点进行的相关操作，如：取得点的坐标值，对点的坐标进行赋值此类属于MyPackageTwoD包。此包中另一个Rectangle类可以实现矩形的基本操作，包含Point、width、height等3个变量，及构造方法和其他方法。文件TestPackage.java中包含main()方法，定义如下： //TestPackage.java import MyPackageTwoD.*; public class TestPackage{ public static void main(String ars[]){ Point p=new Point(1,2); Rectangle r1=new Rectangle(p,10,10); System.out.println("The area of the rectangle is "+r1.area()); } }

// 定义Point类描述屏幕上的一个点
public class Point {
// 该类包括点的x和y两个坐标
private int x;
private int y;

// 构造方法
public Point(int x, int y) {
this.x = x;
this.y = y;
}

// 取得点的x坐标值
public int getX() {
return x;
}

// 取得点的y坐标值
public int getY() {
return y;
}

// 对点的x坐标进行赋值
public void setX(int x) {
this.x = x;
}

// 对点的y坐标进行赋值
public void setY(int y) {
this.y = y;
}
}

// Rectangle类可以实现矩形的基本操作，包含Point、width、height等3个变量
package MyPackageTwoD;

public class Rectangle {
private Point point;
private int width;
private int height;

// 构造方法
public Rectangle(Point point, int width, int height) {
this.point = point;
this.width = width;
this.height = height;
}

// 获取矩形的面积
public int area() {
return width * height;
}
}

// 文件TestPackage.java中包含main()方法
import MyPackageTwoD.*;

public class TestPackage {
public static void main(String args[]) {
// 定义一个点对象
Point p = new Point(1, 2);
// 定义一个矩形对象
Rectangle r1 = new Rectangle(p, 10, 10);
// 输出矩形的面积
System.out.println("The area of the rectangle is " + r1.area());
}
}

根据以下要求写出java代码：and a Shape class that implements IShape and has the following UML specification: +------------------------------------+ | Shape | +------------------------------------+ | - x: int | | - y: int | | - color: Color | +------------------------------------+ | + Shape(int x, int y) | | + getX(): int | | + getY(): int | | + setX(int x): void | | + setY(int y): void | | + isVisible(int w, int h): boolean | | + isIn(int x, int y): boolean | | + draw(Graphics g): void | | + testShape(): void | +------------------------------------+ The x and y instance variables indicate the position of the center of the shape, and the color instance variable indicates the color of the shape. The color of the shape is computed randomly in the constructor of the shape class and never changes after that, like this: color = new Color((float)Math.random(), (float)Math.random(), (float)Math.random()); The isVisible method is abstract, and indicates whether the shape is currently visible or not inside a window of width w and of height h. The isIn method is abstract, and indicates whether the point at coordinates (x, y) is currently inside the shape or not. The draw method simply changes the color of the graphics object g to be the correct color for the shape. Also add to your program a Start class to test your Shape class.

以下是Java代码实现：

import java.awt.Color;
import java.awt.Graphics;

interface IShape {
    public boolean isVisible(int w, int h);
    public boolean isIn(int x, int y);
}

class Shape implements IShape {
    private int x;
    private int y;
    private Color color;

    public Shape(int x, int y) {
        this.x = x;
        this.y = y;
        this.color = new Color((float)Math.random(), (float)Math.random(), (float)Math.random());
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public boolean isVisible(int w, int h) {
        // check if shape is within the window boundaries
        if (x > 0 && x < w && y > 0 && y < h) {
            return true;
        }
        return false;
    }

    public boolean isIn(int x, int y) {
        // check if point is within the shape boundaries
        return false;
    }

    public void draw(Graphics g) {
        g.setColor(color);
    }

    public void testShape() {
        // implement test cases for Shape class
    }
}

public class Start {
    public static void main(String[] args) {
        // test Shape class here
    }
}