我想在“public void actionPerformed(ActionEvent e) {}”之外使用一个变量。

huangapple
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英文:

I want to use a variable outside of "public void actionPerformed(ActionEvent e) {}"

问题

需要创建一个图形用户界面(GUI)，在那里输入高度和宽度，点击按钮后会启动一个新窗口，其高度和宽度将与输入的值相对应。目前，我有一个名为width和height的变量值，它们在public void actionPerformed(ActionEvent e) {}中设置，我希望使用它们来传递新窗口的值。我得出结论，要么从JTextField本身中提取值，要么使用我想要实现的方式。

  1. public class Form extends JFrame implements Runnable {
  2.     public int wt;
  3.     public int ht;
  5.     public void Okno() {
  7.         JFrame win1 = new JFrame("Evolution.IO");
  8.         win1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  9.         win1.setLayout(new BorderLayout());
  10.         win1.setSize(470, 400);
  12.         JPanel pane = new JPanel();
  13.         pane.setLayout(new FlowLayout());
  14.         JTextField txtField = new JTextField(5);
  15.         JTextField txtField2 = new JTextField(5);
  16.         JLabel weightL = new JLabel("Weight: ");
  17.         JLabel highL = new JLabel("High: ");
  18.         pane.add(weightL);
  19.         pane.add(txtField);
  20.         pane.add(highL);
  21.         pane.add(txtField2);
  23.         JButton btn = new JButton("Начать симуляцию");
  24.         btn.addActionListener(new ActionListener() {
  26.             @Override
  27.             public void actionPerformed(ActionEvent e) {
  29.                 wt = Integer.parseInt(txtField.getText());
  30.                 ht = Integer.parseInt(txtField2.getText());
  31.                 if (!(txtField == null)) {
  32.                     Form f = new Form();
  33.                     new Thread(f).start();
  34.                     win1.getDefaultCloseOperation();
  35.                 }
  36.             }
  37.         });
  38.         pane.add(btn);
  39.         win1.add(pane);
  40.         win1.setLocationRelativeTo(null);
  41.         win1.setVisible(true);
  42.     }
  44.     private final int FRAMES_TOTAL = 100000;
  45.     private final int SKIP_FRAMES = 10;
  47.     private final Color BG = new Color(200, 200, 200, 255);
  48.     private final Color BLUE = new Color(150, 160, 255, 255);
  49.     private final Color RED = new Color(255, 100, 120, 255);
  50.     private BufferedImage buf = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_RGB);
  51.     private BufferedImage img = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_RGB);
  52.     private BufferedImage graph = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_ARGB);
  53. }

不再需要以下部分：

英文:

I need to create a GUI and enter the height and width there, click on the button and a new window will start with these heights and widths. Аt the moment I have variable values width and height ​​which are set in public void actionPerformed(ActionEvent e) {} and I want to use them to transfer the values ​​for a new window. I came to the conclusion that it is necessary either to pull values ​​from the JTextField itself or the way that I want to implement

  1. public class Form extends JFrame implements Runnable {
  2. 	//private int w= 1280;
  3. 	//private int h=768;
  4. 	public int wt;
  5. 	public int ht;
  6. 	public void Okno() {
  7. 		
  8. 		JFrame win1 = new JFrame("Evolution.IO");    	
  9. 	    win1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  10. 		win1.setLayout(new BorderLayout());
  11. 		win1.setSize(470, 400);
  12. 		
  13. 		JPanel pane = new JPanel();
  14. 	    pane.setLayout(new FlowLayout());
  15. 		JTextField txtField = new JTextField(5);
  16. 		JTextField txtField2 = new JTextField(5);
  17. 		JLabel weightL = new JLabel("Weight: ");
  18. 		JLabel highL = new JLabel("High: ");
  19. 		pane.add(weightL);
  20. 		pane.add(txtField);
  21. 		pane.add(highL);
  22. 		pane.add(txtField2);
  23. 	
  24. 	    JButton btn = new JButton("Начать симуляцию");
  25. 	    btn.addActionListener(new ActionListener() {
  26. 	        
  28. 			@Override
  29. 	        public void actionPerformed(ActionEvent e) {
  30. 	        	
  31. 	            wt = Integer.parseInt(txtField.getText());
  32. 	            ht = Integer.parseInt(txtField2.getText());
  33. 	            if (!(txtField==null)) {
  34. 		            Form f = new Form();
  35. 		            new Thread(f).start();
  36. 		            win1.getDefaultCloseOperation();
  37. 	            }
  38. 	        }
  39. 	    });
  40. 	    pane.add(btn);
  41. 	    win1.add(pane);
  42. 	    win1.setLocationRelativeTo(null);
  43. 	    win1.setVisible(true);
  44. 	}
  45. 	//THIS DOESNT WORK#
  46. //	public int w1() {
  47. //	      return this.wt;
  48. //	   }
  49. //	public int h1() {
  50. //	      return this.ht;
  51. //	   }
  52. 	
  53.     private final int FRAMES_TOTAL = 100000;
  54.     private final int SKIP_FRAMES = 10;
  56.     private final Color BG = new Color(200, 200, 200, 255);
  57.     private final Color BLUE = new Color(150, 160, 255, 255);
  58.     private final Color RED = new Color(255, 100, 120, 255);
  59.     private BufferedImage buf = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_RGB);
  60.     private BufferedImage img = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_RGB);
  61.     private BufferedImage graph = new BufferedImage(w1(), h1(), BufferedImage.TYPE_INT_ARGB);
  62. //no longer needed

huangapple
  • 本文由 发表于 2020年5月3日 12:54:42
  • 转载请务必保留本文链接：https://java.coder-hub.com/61569793.html
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