JFrame frame = new JFrame(); JButton component1 = new JButton("1"); JButton component2 = new JButton("2"); JButton component3 = new JButton("3"); // By default, the focus traversal order is the same as the insertion order fra…

This example changes the focus traversal keys for the entire application. For an example of how to change the focus traversal keys for a particular component, see e610 Setting Focus Traversal Keys in a Component. // Change the forward focus traversal…

When the focus is on a component, any focus traversal keys set for that component override the default focus traversal keys. For an example of how to change the focus traversal keys for the entire application, see e611 Setting Focus Traversal Keys fo…

Focus and Activation Focus and Activation are closely related.   Definitions Focused window - this is the window that receives keyboard input. The focused window is always or is always contained by the Active window.   Active window - this is the win…

对JTextField进行效验,有两个途径:(1)是使用javax.swing.InputVerifier在获取焦点时进行校验(2)在点击“确定”按钮的监听事件中对控件的值进行校验 鉴于涉及的业务比较多,代码结构已经确定,如果在“确定”按钮的监听事件中进行效验,需要增加一个步骤,并且并不是所有的业务都需要这个效验,就倾向于使用javax.swing.InputVerifier进行,这样做有两个好处,(1)分离业务逻辑与前端 (2)代码更优雅 javax.swing.InputVerifier用的…

2.5 – Garbage Collection  自动垃圾回收 Lua 5.3 Reference Manual http://www.lua.org/manual/5.3/manual.html#2.1 2.5 – Garbage Collection Lua performs automatic memory management. This means that you do not have to worry about allocating memory for new object…

java.util.concurrent 类 LinkedBlockingQueue<E> java.lang.Object java.util.AbstractCollection<E> java.util.AbstractQueue<E> java.util.concurrent.LinkedBlockingQueue<E> 类型参数: E - the type of elements held in this collection 所有已实现的接口:…

概要 本章对Java.util.concurrent包中的ArrayBlockingQueue类进行详细的介绍.内容包括:ArrayBlockingQueue介绍ArrayBlockingQueue原理和数据结构ArrayBlockingQueue函数列表ArrayBlockingQueue源码分析(JDK1.7.0_40版本)ArrayBlockingQueue示例 转载请注明出处:http://www.cnblogs.com/skywang12345/p/3498652.html Array…

概要 本章介绍JUC包中的LinkedBlockingQueue.内容包括:LinkedBlockingQueue介绍LinkedBlockingQueue原理和数据结构LinkedBlockingQueue函数列表LinkedBlockingQueue源码分析(JDK1.7.0_40版本)LinkedBlockingQueue示例 转载请注明出处:http://www.cnblogs.com/skywang12345/p/3503458.html LinkedBlockingQueue介绍 L…

概要 本章介绍JUC包中的LinkedBlockingDeque.内容包括:LinkedBlockingDeque介绍LinkedBlockingDeque原理和数据结构LinkedBlockingDeque函数列表LinkedBlockingDeque源码分析(JDK1.7.0_40版本)LinkedBlockingDeque示例 转载请注明出处:http://www.cnblogs.com/skywang12345/p/3503480.html LinkedBlockingDeque介绍 L…