Setopaque Java. Discover its usage, code snippets, and common pitfalls. You may

Discover its usage, code snippets, and common pitfalls. You may check out the related API usage on the sidebar. I am having a problem with setting JButtons so the are not opaque to i can see the image behind them. Nov 23, 2025 · 本文详细介绍了Java组件的setOpaque ()方法的用途和工作原理，通过创建两个面板来演示设置为true和false时的差异，其中设置为false时组件背景颜色会透明显示，而设置为true时则会正常显示组件中的每个像素。 Mar 19, 2016 · Can anyone explain why Nimbius treats the setOpaque() differently than other java LaF's. Nov 23, 2025 · 文章浏览阅读2. Why i Java Code Examples for javax. java. JButton # setOpaque () The following examples show how to use javax. swing. atomic. If you set your background color, but fail to setOpaque(true), you will not see that bg color. The JLabel is already set to the blue background but it is not opaque until you press the button. It has not been easy so far - there are some things I think I get (but will not present them in the Apr 30, 2010 · I'm trying to add a JPanel to a JFrame and write some text on the JPanel so only the text appears, without the JPanel's gray background. Aug 3, 2025 · I’ll show how it is defined and what that means in practice, as well as how get and setOpaque relate to the weaker getPlain and setPlain and the stronger getAcquire and setRelease. JLabel#setOpaque Learn how to adjust the opacity of a JPanel in Java using setOpaque and AlphaComposite for better UI effects. lang. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. We would like to show you a description here but the site won’t allow us. Object). Aug 1, 2014 · My question is whether the use of setOpaque(false), which I've come to use with JPanel to layout UI in Swing, impacts painting performance more than keeping everything opaque (where isOpaque() retu This page shows Java code examples of javax. This replaces the AWT (Advanced Windowing Toolkit) update / paint mechanism. java という名前で保存します。 Nov 23, 2025 · ` setOpaque() `是 Java Swing中的一个方法，它用于设置组件的不透明度。当将组件的`opaque`属性设置为`true`时，组件将完全不透明，即使它的背景是透明的。当将其设置为`false`时，组件将变得透明，允许其下方的组件或 We would like to show you a description here but the site won’t allow us. Aug 25, 2010 · Let's say I want to make the opacity of a JPanel %20 viewable? I don't mean setOpaque (draw or not draw) or setVisible (show or hide) I mean make it see-through JPanel. concurrent. When I set the back ground color of the label to some color and set the setOpaque to true it does not show up the color. Apr 4, 2009 · When you setOpaque ( true ), Swing wipes the background to the component’s background colour before calling your paintComponent method. Both index i and newValue are passed as parameters to the method. Object java. Sorry if i didn't format the code properly I tried but I just don't use this site very often. Sep 11, 2024 · サンプルコードそれでは簡単なサンプルプログラムを作って試してみます。テキストエディタで次のように記述したあと、 Sample. JButton #setOpaque () . . Dec 27, 2019 · The setOpaque () method of a AtomicReference class is used to set the value of this AtomicReference object with memory effects as specified by VarHandle. setOpaque (java. Why is it still not opaque? Does setOpaque work for if Jan 3, 2020 · The setOpaque () method of a AtomicReferenceArray class is used to set the value of the element at index i to newValue. Its breaking my code because components that are normally transparent no longer are. EDIT: The problem seem Jun 5, 2019 · I keep fighting to understand what VarHandle::setOpaque and VarHandle::getOpaque are really doing. Jul 27, 2020 · I've tried using the textbox1. This method is used to indicate whether a component is opaque or not. Dec 19, 2025 · We’ll explore core concepts, step-by-step code examples, common pitfalls, and best practices to help you implement transparency effectively in your Java applications. Learn about the setOpaque () method in Java, its uses, and how it enhances the rendering performance of Swing components. The setOpaque () method in Java is part of the Component class, specifically in the AWT (Abstract Window Toolkit) framework. Learn how to utilize setOpaque (true/false) in Java to control component transparency. public class TwoPanels { public static v We would like to show you a description here but the site won’t allow us. But setting the opaqueness of the JPanel to false isn't working Aug 22, 2020 · My JLabel won't change to a blue background. util. you know? Is this possi We would like to show you a description here but the site won’t allow us. Dec 11, 2010 · Opaque has a very specific meaning in Swing - it means that the component fully paints the full area within its bounds (see the setOpaque javadoc) This is used primarily to determine whether it is necessary to repaint components behind the current component. 9w次，点赞15次，收藏31次。本文详细介绍了Java组件的setOpaque ()方法的用途和工作原理，通过创建两个面板来演示设置为true和false时的差异，其中设置为false时组件背景颜色会透明显示，而设置为true时则会正常显示组件中的每个像素。 Jan 3, 2020 · The setOpaque () method of a AtomicReferenceArray class is used to set the value of the element at index i to newValue. Aug 11, 2014 · This a simple application I got from here this answer to How to set a Transparent Background of JPanel that's supposed to explain how setOpaque() works. I also have a JTextfield and here it is working, Sep 11, 2013 · I have a jLabel which initially has setOpaque set to false by default. setOpaque(false) method but it didn't change anything and didn't throw and error. Jun 29, 2010 · 6 The opaque flag is used by the Swing ComponentUI to test whether they should paint their background or whether they should not. AtomicBoolean All Implemented Interfaces: Aug 15, 2013 · Calling setOpaque for any of the components in the question is unnecessary - by default the backgrounds are displayed when custom painting is correctly implemented.

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