Computer Applications
What are the library classes in Java? What is their use?
Java Library Classes
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Answer
Library classes are the pre-written classes which are a part of the Java system. For example, the String and Scanner class.
Java environment has a huge library of library classes that contain pre-defined methods to simplify the job of a programmer. These methods support input/output operations, String handling and help in development of network and graphical user interface.
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What will be the result when the following statement is executed?
int count = new Integer(12);- Variable count will be initialised with value 12.
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- An array count will be initialised with 12 elements, all having a default value of zero (0).
- Value of count will be unknown as no value has been assigned yet.
In which package is the wrapper class Integer available?
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- java.util
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