我写了两个类。主类运行程序。它要求用户输入。基于用户输入,第二类将打印出一个正方形。每个方格都会打印出来----每个数字和|为墙壁的每个数字。修复了基于用户输入增长的方块
例如,假设用户输入了两个。在这种情况下,它会打印出一个正方形。
----- -----
| |
| |
----- -----
问题是我不能根据用户输入获得正方形的增长。
这是主类
import java.util.Scanner;
public class Assignment4
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
SquareBuilder square = new SquareBuilder(scan.nextInt());
System.out.print(square.toString());
square.changeSize(scan.nextInt());
System.out.print(square.toString());
square.changeSize(scan.nextInt());
System.out.print(square.toString());
square.changeSize(scan.nextInt());
System.out.print(square.toString());
square.changeSize(scan.nextInt());
System.out.print(square.toString());
}
}
public class SquareBuilder
{
final private int LENGTH_RATIO = 4;
final private String CEILING_FLOOR = "----";
private int size;
private int spaces;
private String square;
public SquareBuilder(int size)
{
this.size = size;
constructSquare();
}
private void spaces()
{
spaces = LENGTH_RATIO * size - 2;
}
private void ceilingAndFloor()
{
square += "\n";
for (int i = 0; i < size; ++i)
{
square += CEILING_FLOOR;
}
}
private void walls()
{
for (int i = 0; i < size; ++i)
{
square +="\n|";
for (int j = 0; j < spaces; ++j)
{
square +=" ";
}
square +="|";
}
}
private void constructSquare()
{
spaces();
square = "";
ceilingAndFloor();
walls();
ceilingAndFloor();
}
public int area()
{
return size * size;
}
public void changeSize(int size)
{
this.size = size;
}
public String toString()
{
String retVal = square;
retVal += "\nSize: " + size + " Area: " + area();
return retVal;
}
}
什么是错误? – mbeckish 2013-05-01 17:53:26
正方形应该根据用户输入增长。基本的方形打印----底部和顶部天花板和|为墙壁。如果他们输入了两个,它会打印出来---- ----和| |对于每一面墙 ----- ----- – user2340248 2013-05-01 18:01:12
你确定,我只是复制并粘贴它,它运行良好。 – 2013-05-01 18:05:05