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i would like to know more about comparator interface. why it is in java.util not in java.lang.<br />
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how it is different from comparable interface.<br />
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how compare() different from compareTo().<br />
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why implementing comparator second method equals() is optional unlike implementing compare() is mandotory<br />
please advise
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i would like to know more about comparator interface. why it is in java.util not in java.lang.

how it is different from comparable interface.

how compare() different from compareTo().

why implementing comparator second method equals() is optional unlike implementing compare() is mandotory
please advise

comparator interface

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules and security requirements.

Java EE

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Java

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