Define Packages in Java?

Java Programming Language > Packages in java > Benefits of OOP

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A Package can be defined as a grouping of related types(classes, interfaces, enumerations and annotations ) providing access protection and name space management.

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105. Why Packages are used?

Answer: Packages are used in Java in-order to prevent naming conflicts, to control access, to make searching/locating and usage of classes, interfaces, enumerations and annotations, etc., easier.

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Question: Packages in java Short

106. What do you mean by Multi-threaded program?

Answer: A multithreaded program contains two or more parts that can run concurrently. Each part of such a program is called a thread, and each thread defines a separate path of execution.

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107. What are the two ways in which Thread can be created?

Answer: Thread can be created by: implementing Runnable interface, extending the Thread class.

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108. What is an applet?

Answer: An applet is a Java program that runs in a Web browser. An applet can be a fully functional Java application because it has the entire Java API at its disposal.

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109. An applet extend which class?

Answer: An applet extends java.applet.Applet class.

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Answer: It uses garbage collection to free the memory. By cleaning those objects that is no longer reference by any of the program.

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111. Define immutable object?

Answer: An immutable object can

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Question: Interface in java Short

Answer: It is a collection of element which cannot contain duplicate elements. The Set interface contains only methods inherited from Collection and adds the restriction that duplicate elements are prohibited.

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Answer: It is a Set implemented when we want elements in a sorted order.

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Define Packages in Java?

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Join Our telegram group to ask Questions

105. Why Packages are used?

106. What do you mean by Multi-threaded program?

107. What are the two ways in which Thread can be created?

108. What is an applet?

109. An applet extend which class?

110. Explain garbage collection in Java?

111. Define immutable object?

113. Explain Set Interface?

114. Explain TreeSet?

115. What is Comparable Interface?