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The digits 0 through 9 may not be used as the first character of an identifier but they may be used after the first character of an identifier. In Java, identifiers are names given to variables, classes, methods, etc. According to the Java naming conventions, the first character of an identifier must be a letter … Read more

The Collections API is a set of classes and interfaces that support operations on collections of objects. The Collections API in Java refers to the set of interfaces and classes provided by the Java Collections Framework (JCF) to represent and manipulate collections of objects. The Java Collections Framework is a set of classes and interfaces … Read more

When a thread terminates its processing, it enters the dead state. When a thread in Java terminates its processing, it enters the “Terminated” state. The thread goes through various states during its lifecycle, including: New: The thread is in this state when it has been instantiated but not yet started. Runnable: The thread is in … Read more

The Panel and Applet classes use the FlowLayout as their default layout. In Core Java, the correct answer is that Panel and Applet containers use FlowLayout as their default layout. The FlowLayout arranges components from left to right in a row until there is no more space, and then it moves to the next row. It’s worth noting that the use … Read more

The setLayout() method is used to specify a container’s layout. In Core Java, the method used to specify a container’s layout is the setLayout method. This method is part of the Container class, which is a superclass of components like JPanel, JFrame, etc., in Java’s Swing framework. Here’s a simple example of how you might use setLayout: … Read more