Learn to check if a string contains the specified substring in Java using theString.contains()API. 1.String.contains()API TheString.contains(substring)searches a specified substring in the current string. It returnstrueif and only if thesubstringis found in the given string otherwise returnsfalse...
This article introduces you to the difference between enumerated types and typesafe enums. You will learn how to declare a typesafe enum and use it in a switch statement, and you’ll see how to customize a typesafe enum by adding data and behaviors. We’ll also take a look atjava.lang....
While the notion of use case object might seem very simple on the first sight, implementing them properly takes quite a bit of skill in practice. Therefore, in this post, I’ll describe how to design proper use cases in Java and avoid the most common mistakes. Simple Use Cases Generally ...
Examples that Use Tables Creating a Simple Table Try this: Click the Launch button to run SimpleTableDemo using Java™ Web Start (download JDK 7 or later). Or, to compile and run the example yourself, consult the example index. Click the cell that contains "Snowboarding". The entire fi...
StringUtilsis a class used to handle String and provides more utility methods than the JavaStringclass. This class does not belong to the Java package; instead, it belongs to theApache Commons Library. To use this class in your package, you must first include its JAR file in your project ...
until you get used to them. In particular, each frame displays a separate HTML document. Even if the documents are empty, you must save them all before you can preview them (because the frameset can be accurately previewed only if it contains the URL of a document to display in each ...
The following code fromButtonTabComponent.javaremoves a tab from the tabbed pane. Note that event-handling code is necessary. Since each tab contains a realJButtonobject, you must attach anActionListenerto the close button. As the user clicks the button, theactionPerformedmethod determines the ind...
Also, if you’re using an IDE, you don’t need to do all of this manually. For example: in Eclipse, you can generate a toString method by opening the Book.java and right-click on the source code and select: Source > Generate > toString ...
Installing dependency to interact with Atlas There are various ways of interacting with Atlas. Since we are building a service using a serverless function in Java, my preference is to useMongoDB Java driver. So, let's add the dependency for the driver in thebuild.gradlefile....
For more information, see Migrate Azure Spring Apps Standard consumption and dedicated plan to Azure Container Apps. With Spring Boot Native Image applications, use the Azure Monitor OpenTelemetry Distro / Application Insights in Spring Boot native image Java application project instead of the ...