swing

Unable to add JButtons wrapped in JPanel into JTable

由 北城以北 提交于 2021-02-08 09:28:14
问题 I am having a JTable , where the final column of the table is for adding 2 buttons. Below is the format of my JTable . Below is my code private class ViewLawyersDisplayData extends ComponentAdapter { @Override public void componentShown(ComponentEvent e) { dbConnector = new DBHandler(); dbConnector.makeConnection(); ResultSet rs = dbConnector.selectAllLawyerDetails(); if(rs==null) { JOptionPane.showMessageDialog(null,"The table is empty"); } else { try { while(rs.next()) { int id = rs.getInt(

My java(JFrame) player movement script won't work

由 ﹥＞﹥吖頭↗ 提交于 2021-02-08 09:20:27
问题 I am making a top down 2d survival game where the player must dodge projectiles from enemies in order to survive, but I've run into an issue that may, slightly influence the gameplay of my first real java project, that issue being that the player cannot move in any way shape or form and if the projectiles had of been implemented, then the player would lose immediately after spawning into this world. here is the code: package maximiza; import java.awt.*; import java.awt.event.KeyEvent; import

Changing Dropdown content in a JTable Column in Swing

由 不打扰是莪最后的温柔 提交于 2021-02-08 08:42:37
问题 I have a JTable in which the first column contains combobox with same items in each cell.If i select an item in a cell combobox i need to remove the selected item from all the other combobox in that column and also add the previous selected item to all the other combobox.How should i do that?Please help me with an example. public class Save extends JFrame { String[] items1 = new String[] { "Cash", "Bank1", "Bank2" ,"Bank3"}; TableCellEditor editors; DefaultTableModel dtmFunds; private

How to use the JScrollPane in Java

由 风格不统一 提交于 2021-02-08 07:10:47
问题 How can I get the scroller around my JList component in the code given below? It doesn't seem to work properly :( public class JButtonO extends JFrame{ String[] values = {"henry", "Michael","Uche","John","Ullan","Nelly", "Ime","Lekan","Austine","jussi","Ossi","Imam","Empo","Austine","Becky", "Scholar","Ruth", "Anny"}; public JButtonO() { super("the button"); this.setSize(400,200); JPanel panel = new JPanel(); JLabel label = new JLabel("Output Items:"); label.setAlignmentX(1); label

How to use the JScrollPane in Java

由 霸气de小男生 提交于 2021-02-08 07:06:21
问题 How can I get the scroller around my JList component in the code given below? It doesn't seem to work properly :( public class JButtonO extends JFrame{ String[] values = {"henry", "Michael","Uche","John","Ullan","Nelly", "Ime","Lekan","Austine","jussi","Ossi","Imam","Empo","Austine","Becky", "Scholar","Ruth", "Anny"}; public JButtonO() { super("the button"); this.setSize(400,200); JPanel panel = new JPanel(); JLabel label = new JLabel("Output Items:"); label.setAlignmentX(1); label

SwingUtilities.invokeLater on full speed thread

由 喜夏-厌秋 提交于 2021-02-08 06:16:27
问题 I have a thread that does display updates on my JFrame by using SwingUtilities.invokeLater. The thread's speed is adjustable, and when it set to full speed (no sleeping between updates), my program gets slowed down badly. I guess the problem is my thread is generating too much SwingUtilities.invokeLater events that JFrame's thread can not consume. So is there anything I can do on my thread to remove previously added but not consumed events? Or should I use some other ways to update JFrame

How to change appearance of JComboBox's display area

由 喜你入骨 提交于 2021-02-08 04:47:40
问题 I'm using a custom BasicComboBoxRenderer for a JComboBox and I've changed the appearance of the items of the drop-down list. However these changes also apply to the single top item that shows in the combobox (don't know how to call it). I want the top item to be independent of the other items in the list, if possible. I would also like to get rid of the top item's blue color when it is focused (setFocusable(false) is not what I want). I've tried to use the "renderer index" (-1) to affect the

Changing Look And Feel by Swapping UIDefaults

由 拟墨画扇 提交于 2021-02-08 04:47:32
问题 I am writing a GUI Builder and want the user to be able to change the LookAndFeel of the GUI he builds. The LookAndFeel should only be changed for the Components inside the editor area. The rest of the Application should remain with the SystemLookAndFeel. The great problem is, that the LookAndFeel is implemented as a Singleton and changing the LookAndFeel multiple times during the Application causes a lot of bugs. I started experimenting with Buttons: I tried setting the ButtonUI to

Changing Look And Feel by Swapping UIDefaults

由 半世苍凉 提交于 2021-02-08 04:47:00
问题 I am writing a GUI Builder and want the user to be able to change the LookAndFeel of the GUI he builds. The LookAndFeel should only be changed for the Components inside the editor area. The rest of the Application should remain with the SystemLookAndFeel. The great problem is, that the LookAndFeel is implemented as a Singleton and changing the LookAndFeel multiple times during the Application causes a lot of bugs. I started experimenting with Buttons: I tried setting the ButtonUI to

201874040116-李鑫《面向对象程序设计（java）》第8周学习总结

由 試著忘記壹切 提交于 2021-02-08 03:28:25
项目 内容 这个作业属于哪个课程 https://www.cnblogs.com/nwnu-daizh/ 这个作业的要求在哪里 https://www.cnblogs.com/nwnu-daizh/p/11703678.html 作业学习目标 掌握接口定义方法； 掌握实现接口类的定义要求； 掌握实现了接口类的使用要求； 理解程序回调设计模式； 掌握Comparator接口用法； 掌握对象浅层拷贝与深层拷贝方法； 掌握Lambda表达式语法； 了解内部类的用途及语法要求。 第一部分：总结第六章理论知识 　　1.接口（interface）：　　　 　　　　接口的声明语法格式如下： 　　　　[ 可见度 ] interface 接口名称 [ extends 其他的接口名 ] { 　　　　 // 声明变量 　　 　　 // 抽象方法 　　　　} 　　　　1）接口不是类，是对类的一组需求描述，由常量和抽象方法组成，不能包含实例域和静态方法 　　　　2）不能构造接口的对象，但可以声明接口的变量，接口变量必须引用实现了接口的类对象 　　　　3）接口可以象类的继承一样扩展 public interface 接口1 extends接口2 {...} 　　　　4）一个类可以实现多个接口 　　2.回调（callback）： 　　　　指出某个特定事件发生时应该采取的动作；在java
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