我应该如何解决这个问题

Question

好吧我一直坚持这10个错误，有人可以帮助我吗？这些错误是关于标识符和东西的问题。我坚持了这一段时间，只是不知道我错了哪里？我没有正确设置变量或什么？这个错误：

DemoSquare.java:36：错误：预期 公共广场（高度，宽度） ^

DemoSquare.java:36：错误：预期 公共广场（高度，宽度） ^

DemoSquare.java:36：error：';'预期 公共广场（高度，宽度） ^

DemoSquare.java:39：错误：预期 square_width =宽度; ^

DemoSquare.java:42：错误：类，接口，或枚举预期 公众诠释的getHeight（） ^

DemoSquare.java:47：错误：类，接口，或枚举预期 } ^

DemoSquare.java:48：错误：类，接口，或枚举预期 公众诠释的getWidth（）{ ^

DemoSquare.java:50：错误：类，INTE rface，或枚举预期 } ^

DemoSquare.java:51：错误：类，接口，或枚举预期 公众诠释computeSurfaceArea（） ^

DemoSquare.java:54：错误：类，接口或枚举预期 surfaceArea =（getheight（）* getwidth（））; ^

DemoSquare.java:55：error：class，interface，or enum expected return surfaceArea; ^

DemoSquare.java:57：错误：类，接口，或枚举预期 } ^ 12错误

工具退出码1

`import java.util.Scanner; 
public class DemoSquare 
{ 
public static void main(String args[]) 
{ 
Scanner input = new Scanner(System.in); 

    //Prints asking for Square user input 
    System.out.println("Please enter square height: "); 
    int square_height = input.nextInt(); 
    System.out.println("Please enter square width: "); 
    int square_width = input.nextInt(); 

    //Prints asking for Cube user input 
    System.out.println("Please enter cube height: "); 
    int cube_height = input.nextInt(); 
    System.out.println("Please enter cube width: "); 
    int cube_width = input.nextInt(); 
    System.out.println("Please enter cube depth: "); 
    int cube_depth = input.nextInt(); 

    //Prints for Square Area :) 
    Square aSquare = new Square(square_height, square_width); 
    System.out.println("Square Area is: "+ square.computeSurfaceArea()); 
    Cube aCube = new Cube(cube_height, cube_width, cube_depth); 
    System.out.println("Cube Area is: " + cube.computeSurfaceArea()); 

} 

} 

public class Square 
{ 
    int square_height = 0; 
    int square_width = 0; 

    public Square(height, width) (
    square_height= height; 
    square_width= width; 
    } 

    public int getheight() 
{ 

    return square_height; 

    } 

    public int getwidth(){ 

    return square_width; 
    } 

    public int computeSurfaceArea() 
    { 
    int surfaceArea = square_height * square_width; 
    surfaceArea = (getheight() * getwidth()); 
    return surfaceArea; 

    } 

    } 
    public class Cube extends Square 
    { 

     int cube_height = 0; 
     int cube_width = 0; 
     int cube_depth = 0; 


     public Cube(int height, int width, int depth) { 
     super(cube_height, cube_width); 
     cube_depth = depth; 
    } 

    @Override 
    public int getcube_width() { 
     return cube_width; 
    } 

    @Override 
    public int getcube_height() { 
     return cube_Height; 
    } 

    public int getcube_depth() { 
     return cube_depth; 
    } 

    @Override 
    public int computeSurfaceArea() { 

     int cube_surface_area = (cube_height * cube_width * cube_depth); 

     return cube_surface_area; 
    } 
    }` 

Answer 1

我注意到的第一件事完成在这里，

public Square(height, width) 

应该是

public Square(int height, int width) 

我注意到接下来的事情

public int computeSurfaceArea() 
{ 
    // int surfaceArea = square_height * square_width; 
    // surfaceArea = (getheight() * getwidth()); 
    return getheight() * getwidth(); 
} 

最后，我建议你遵循标准的Java命名惯例; getHeight()和getWidth()，然后getHeight(),getWidth()和getDepth()在Cube。也可以称它为getSurfaceArea()。一致性很好（并记住maintenance programmer）。

注意这也适用于您的Cube构造，速战速决 -

public Cube(int height, int width, int depth) { 
    super(height, width); // cube_height, cube_width are defaulting to 0. 
    cube_depth = depth; 
    cube_height = height; // <-- you called it cube_height, not just height. 
    cube_width = width; 
}