java 13 interview questions and answers

If you are running Java on English Windows platforms, it is probably Cp1252. If you are running Java on English Solaris platforms, it is most likely 8859_1 In Java, the platform’s default character encoding can be obtained using the Charset class. The default character encoding is determined by the system property “file.encoding”. You can retrieve … Read more

The result is a String object. When you add a double value to a String in Java, the double value will be converted to its string representation and then concatenated to the existing String. This process is known as string concatenation. For example: java double doubleValue = 10.5; String stringValue = “The value is: ” + doubleValue; … Read more

The File class encapsulates the files and directories of the local file system. The RandomAccessFile class provides the methods needed to directly access data contained in any part of a file. In Java, the File and RandomAccessFile classes serve different purposes and are used in different contexts. File Class: The File class is part of the java.io package and … Read more

The enableEvents() method is used to enable an event for a particular object. Normally, an event is enabled when a listener is added to an object for a particular event. The enableEvents() method is used by objects that handle events by overriding their event-dispatch methods. In Java, the enableEvents() method is not used for a specific purpose related to … Read more

A void return type indicates that a method does not return a value. In Core Java, the void return type is used to indicate that a method does not return any value. When a method is declared with a void return type, it means that the method performs some actions but does not produce a result that … Read more