The java.lang.System‘s out and err objects are used to write text data to the standard output stream and standard error stream. The default output stream is the command-line console. But the java.lang.System class also provides a method for you to redirect the standard output stream to other destinations such as file stream. With this, you […]
How To Write Console Output To Text File In Java Read More »
This example will tell you how to use java standard input, output, and error object to read string data from user command line input, write string data to standard output console and display error messages to standard error output. All the standard input or output object is the static variable of java.lang.System class.
Java System In Out Error Example Read More »
When you create a web page, you may want it to be displayed adaptable both on mobile devices and desktop PC. This goal can be achieved with CSS3 extension properties. This example will just tell you how to implement that goal with a user account registration Html form.
Mobile Responsive Registration Form In Html Example Read More »
When you create an Html web page, of course, you want it to be viewable and user-friendly on all screen-sized devices include the mobile device, PC, and tablets. But before the viewport meta tag is introduced in Html, the mobile devices can not display the web page as well as desktop. This article will introduce
Responsive Mobile Ready WebPage Using ViewPort Meta Tag Example Read More »
Sometimes you need to connect to the local webserver running on your PC from the android emulator. And sometimes you need to use a PC web browser to browse web pages stored in a web server running in an android emulator. These two scenarios are common use cases when you develop android applications. This article
How To Connect To A Http Server Running In Android Emulator From PC Vice Versa Read More »
Apache Tomcat is a widely used web server. It can be installed and run on numerous operating systems like Windows, Linux, and macOS. This article will tell you how to install tomcat on mac step by step. But before installing it, you should enable root user in macOS following article How To Enable Root User
How To Install Tomcat In MacOS Read More »
The root user is not enabled by default in macOS. So when you run some installation program that always needs root permission you should get errors. The error message may confuse you, it sometimes tells you the password is wrong but the real reason is that the root user has never been enabled at all.
How To Enable Root User Or Change Root Password In MacOS Read More »
We all know that we can set text on the android.widget.Button. But we can add images to the android.widget.Button also. We can even specify the location of the image relative to the text on the button, such as on top, bottom, left, and right to the text. This article will show you an example of
Android Button With Image And Text Example Read More »
android.widget.ImageButton is used to create a button with image in android app. It is similar with android Button object. You can also set an onClickListener to it to process button click event. But ImageButton do not has text property, if you want to display both text and image in a button, you need to use
Android ImageButton Example Read More »
This example will tell you how to set the android.widget.TextView text foreground color and background color in source code. For other android UI components, it is similar to change foreground and background color like this.
How To Set Text Color And Background Color In Android Programmatically Read More »
