core java in java questions asked in companies

In which package is the applet class located?

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Applet classes are located in ” java.applet “package. In Core Java, the Applet class is located in the java.applet package. The full name of the Applet class is java.applet.Applet. Applets are Java programs that are designed to be embedded within HTML pages and run on the client side, typically in a web browser.

What are applets ?

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Applets are small applications that are accessed from web server automatically installed, and run from the browser. Once an applet arrives on the client it has limited access to resources thus ensuring security for the end user. An applet is controlled by the software that runs it. Usually, the underlying software is a browser, but … Read more

What’s the use of JAVAP tool ?

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javap disassembles compiled Java files and spits out representation of the Java program. This is a useful option when the original source code is not available. The javap tool in Java is used for examining the bytecode of compiled Java classes. It is a part of the Java Development Kit (JDK) and provides information about … Read more

How can we force the garbage collector to run?

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Garbage collector can be run forcibly using “System.gc()” or “Runtime.gc()” In Java, you cannot explicitly force the garbage collector to run. The garbage collector in Java is managed by the Java Virtual Machine (JVM), and it runs automatically to reclaim memory when it determines that objects are no longer reachable and eligible for garbage collection. … Read more

Explain in depth Garbage collector ?

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Garbage collection is the process of automatically freeing objects that are no longer referenced by the program. This frees the programmer from having to keep track of when to free allocated memory, thereby preventing many potential bugs. Thus making programmers more productive as they can now put more effort in coding rather than worrying about … Read more