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Java Garage by Eben Hewitt

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I
identifier

A name used to represent a data item in a Java program such as a field, method, or class.

implements

A Java keyword used in the class declaration to indicate the name of an interface that this class provides an implementation for. A class can implement multiple interfaces; when this is done, separate interface names with a comma, as in this example: public final class String extends Object implements CharSequence, Comparable, Serializable.

import

Allows the programmer to reference individual class names in code without using the fully qualified class name (that is, without using the package name). Only classes in the java.lang package are imported automatically—and because of this, we can simply type String in our code, instead of ...

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