如何确保JButtons按照他们的文字按升序排列

Question

我的问题是我将如何在buttonHandler（）中使用循环来确定按下的按钮的值是否大于前一个值。所以我在寻找的是一种方法，以确保谁点击按钮点击他们按照他们看到的数量升序。这是一个基于点击按钮的GUI游戏，以评估灵活性。

这里是按钮数组填充1-12的数字的方法，这也确保没有重复的数字，因此它将具有从1-12的所有数字，无论如何。

public static JButton[] randNum() 
    { 

     arrayImage [0] = (int) (Math.random() * 12) + 1; 
     arrayImage [1] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [1] == arrayImage [0]) 
     { 
      arrayImage [1] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [2] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [2] == arrayImage [1] || arrayImage [2] == arrayImage [0]) 
     { 
      arrayImage [2] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [3] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [3] == arrayImage [2] || arrayImage [3] == arrayImage [1] || arrayImage [3] == arrayImage [0]) 
     { 
      arrayImage [3] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [4] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [4] == arrayImage [3] || arrayImage [4] == arrayImage [2] || arrayImage [4] == arrayImage [1] || arrayImage [4] == arrayImage [0]) 
     { 
      arrayImage [4] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [5] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [5] == arrayImage [4] || arrayImage [5] == arrayImage [3] || arrayImage [5] == arrayImage [2] || arrayImage [5] == arrayImage [1] || arrayImage [5] == arrayImage [0]) 
     { 
      arrayImage [5] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [6] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [6] == arrayImage [5] || arrayImage [6] == arrayImage [4] || arrayImage [6] == arrayImage [3] || arrayImage [6] == arrayImage [2] || arrayImage [6] == arrayImage [1] || arrayImage [6] == arrayImage [0]) 
     { 
      arrayImage [6] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [7] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [7] == arrayImage [6] || arrayImage [7] == arrayImage [5] || arrayImage [7] == arrayImage [4] || arrayImage [7] == arrayImage [3] || arrayImage [7] == arrayImage [2] || arrayImage [7] == arrayImage [1] || arrayImage [7] == arrayImage [0]) 
     { 
      arrayImage [7] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [8] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [8] == arrayImage [7] || arrayImage [8] == arrayImage [6] || arrayImage [8] == arrayImage [5] || arrayImage [8] == arrayImage [4] || arrayImage [8] == arrayImage [3] || arrayImage [8] == arrayImage [2] || arrayImage [8] == arrayImage [1] || arrayImage [8] == arrayImage [0]) 
     { 
      arrayImage [8] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [9] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [9] == arrayImage [8] || arrayImage [9] == arrayImage [7] || arrayImage [9] == arrayImage [6] || arrayImage [9] == arrayImage [5] || arrayImage [9] == arrayImage [4] || arrayImage [9] == arrayImage [3] || arrayImage [9] == arrayImage [2] || arrayImage [9] == arrayImage [1] || arrayImage [9] == arrayImage [0]) 
     { 
      arrayImage [9] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [10] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [10] == arrayImage [9] || arrayImage [10] == arrayImage [8] || arrayImage [10] == arrayImage [7] || arrayImage [10] == arrayImage [6] || arrayImage [10] == arrayImage [5] || arrayImage [10] == arrayImage [4] || arrayImage [10] == arrayImage [3] || arrayImage [10] == arrayImage [2] || arrayImage [10] == arrayImage [1] || arrayImage [10] == arrayImage [0]) 
     { 
      arrayImage [10] = (int) (Math.random() * 12) + 1; 
     } 
     arrayImage [11] = (int) (Math.random() * 12) + 1; 
     while (arrayImage [11] == arrayImage [10] || arrayImage [11] == arrayImage [9] || arrayImage [11] == arrayImage [8] || arrayImage [11] == arrayImage [7] || arrayImage [11] == arrayImage [6] || arrayImage [11] == arrayImage [5] || arrayImage [11] == arrayImage [4] || arrayImage [11] == arrayImage [3] || arrayImage [11] == arrayImage [2] || arrayImage [11] == arrayImage [1] || arrayImage [11] == arrayImage [0]) 
     { 
      arrayImage [11] = (int) (Math.random() * 12) + 1; 
     } 

     for (int x = 0 ; x <= 11 ; x++) 
     { 
      buttonArray [x] = new JButton ("" + arrayImage [x]); 
      buttonArray [x].setBackground (Color.orange); 
     } 
     for (int i = 0 ; i <= 11 ; i++) 
     { 
      buttonArray [i].setActionCommand ("" + arrayImage [i]); 

     } 

     return buttonArray; 
    } 

这是我在主要方法中引入按钮数组的方法。

static JButton btnStart, buttonArray[] = new JButton [12]; 

赋予它们颜色，以及循环用于按顺序为它们赋予每个动作侦听器。

for (int x = 0 ; x <= 11 ; x++) 
     { 
      buttonArray [x] = new JButton (""); 
      buttonArray [x].setBackground (Color.orange); 
     } 


     ButtonHandler onClick = new ButtonHandler(); 
     btnStart.addActionListener (onClick); 
     for (int y = 0 ; y <= 11 ; y++) 
     { 
      buttonArray [y].addActionListener (onClick); 
     } 

这里是面板的介绍，并将面板添加到面板中。然后将面板添加到框架上。

JPanel gameBoard = new JPanel (new GridLayout (2, 6)); 
     gameBoard.setBackground (Color.orange); 
     JPanel gameContent = new JPanel (new GridLayout (1, 2)); 
     JPanel mainGame = new JPanel (new BorderLayout()); 



     //GAme Board 
     gameContent.add (btnStart); 
     gameContent.add (scoreOutput); 
     gameBoard.add (buttonArray [0]); 
     gameBoard.add (buttonArray [1]); 
     gameBoard.add (buttonArray [2]); 
     gameBoard.add (buttonArray [3]); 
     gameBoard.add (buttonArray [4]); 
     gameBoard.add (buttonArray [5]); 
     gameBoard.add (buttonArray [6]); 
     gameBoard.add (buttonArray [7]); 
     gameBoard.add (buttonArray [8]); 
     gameBoard.add (buttonArray [9]); 
     gameBoard.add (buttonArray [10]); 
     gameBoard.add (buttonArray [11]); 


     mainGame.add (gameBoard, BorderLayout.CENTER); 
     mainGame.add (gameContent, BorderLayout.PAGE_END); 



Container contentPane1 = questions.getContentPane(); 
     contentPane1.add (mainGame); 


questions.setSize (500, 250); 
     questions.setVisible (true); 

Answer 1

首先，您必须将数字作为它们的名称给按钮。 你可以这样做： 取一个数组和一个变量：在构造函数的n

int pressed[] = new int[12]; 
int n; 

设定值0。 现在的actionPerformed（ActionEvent的AE）方法：

if(pressed.length==0) 
    pressed[n]=Integer.parseInt(ae.getActionCommand()); 

else 
    Check if last number in array is less than current number 
    else show error 

可以使用获得最后一个数字： 按下[pressed.length-1]