JDK14/Java14源码在线阅读

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/**
 * Provides interfaces that enable the development of input methods that can be
 * used with any Java runtime environment. Input methods are software components
 * that let the user enter text in ways other than simple typing on a keyboard.
 * They are commonly used to enter Japanese, Chinese, or Korean - languages
 * using thousands of different characters - on keyboards with far fewer keys.
 * However, this package also allows the development of input methods for other
 * languages and the use of entirely different input mechanisms, such as
 * handwriting recognition.
 *
 * <h2><a id="Packaging"></a>Packaging Input Methods</h2>
 * Input methods can be made available by adding them to the application's class
 * path. The main JAR file of an input method must contain the file:
 * <pre>
 *     META-INF/services/java.awt.im.spi.InputMethodDescriptor
 * </pre>
 * The file should contain a list of fully-qualified class names, one per line,
 * of classes implementing the {@code java.awt.im.spi.InputMethodDescriptor}
 * interface. Space and tab characters surrounding each name, as well as blank
 * lines, are ignored. The comment character is {@code '#'}
 * ({@code \u005Cu0023}); on each line all characters following the first
 * comment character are ignored. The file must be encoded in UTF-8.
 * <p>
 * For example, if the fully-qualified name of the class that implements
 * {@code java.awt.im.spi.InputMethodDesciptor} for the <em>Foo</em> input
 * method is {@code com.sun.ime.FooInputMethodDescriptor}, the file
 * {@code META-INF/services/java.awt.im.spi.InputMethodDescriptor}
 * contains a line:
 * <pre>
 *     com.sun.ime.FooInputMethodDescriptor
 * </pre>
 * The input method must also provide at least two classes: one class
 * implementing the {@code java.awt.im.spi.InputMethodDescriptor} interface, one
 * class implementing the {@code java.awt.im.spi.InputMethod} interface. The
 * input method should separate the implementations for these interfaces, so
 * that loading of the class implementing {@code InputMethod} can be deferred
 * until actually needed.
 *
 * <h2><a id="Loading"></a>Loading Input Methods</h2>
 * The input method framework will usually defer loading of input  method
 * classes until they are absolutely needed. It loads only the
 * {@code InputMethodDescriptor} implementations during AWT initialization. It
 * loads an {@code InputMethod} implementation when the input method has been
 * selected.
 *
 * <h2><a id="PeeredComponents"></a>Java Input Methods and Peered Text
 * Components</h2>
 * The Java input method framework intends to support all combinations of input
 * methods (host input methods and Java input methods) and components (peered
 * and lightweight). However, because of limitations in the underlying platform,

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