com.google.gwt.core.shared

## Class GWT

- java.lang.Object
- - com.google.gwt.core.shared.GWT

-     public final class GWT
      extends java.lang.Object

  Supports core functionality that in some cases requires direct support from the compiler and runtime systems such as runtime type information and deferred binding.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `GWT()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static <T> T` | `create(java.lang.Class<?> classLiteral)` Instantiates a class via deferred binding.
    `static java.lang.String` | `getUniqueThreadId()` Returns the empty string when running in Production Mode, but returns a unique string for each thread in Development Mode (for example, different windows accessing the dev mode server will each have a unique id, and hitting refresh without restarting dev mode will result in a new unique id for a particular window.
    `static java.lang.String` | `getVersion()` Get a human-readable representation of the GWT version used, or null if this is running on the client.
    `static boolean` | `isClient()` Returns `true` when running inside the normal GWT environment, either in Development Mode or Production Mode.
    `static boolean` | `isProdMode()` Returns `true` when running in production mode.
    `static boolean` | `isScript()` Determines whether or not the running program is script or bytecode.
    `static void` | `log(java.lang.String message)` Logs a message to the development shell logger in Development Mode.
    `static void` | `log(java.lang.String message, java.lang.Throwable e)` Logs a message to the development shell logger in Development Mode.
    `static void` | `setBridge(GWTBridge bridge)` Called via reflection in Development Mode; do not ever call this method in Production Mode.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### GWT

          public GWT()

  - ### Method Detail

    - #### create

          public static <T> T create(java.lang.Class<?> classLiteral)

      Instantiates a class via deferred binding.

      The argument to `create(Class)` must be a class literal because the Production Mode compiler must be able to statically determine the requested type at compile-time. This can be tricky because using a `Class` variable may appear to work correctly in Development Mode.

      Parameters:
        `classLiteral` - a class literal specifying the base class to be instantiated
      Returns:
        the new instance, which must be cast to the requested class

    - #### getUniqueThreadId

          public static java.lang.String getUniqueThreadId()

      Returns the empty string when running in Production Mode, but returns a unique string for each thread in Development Mode (for example, different windows accessing the dev mode server will each have a unique id, and hitting refresh without restarting dev mode will result in a new unique id for a particular window. TODO(unnurg): Remove this function once Dev Mode rewriting classes are in gwt-dev.

    - #### getVersion

          public static java.lang.String getVersion()

      Get a human-readable representation of the GWT version used, or null if this is running on the client.
      Returns:
        a human-readable version number, such as `"2.5"`

    - #### isClient

          public static boolean isClient()

      Returns `true` when running inside the normal GWT environment, either in Development Mode or Production Mode. Returns `false` if this code is running in a plain JVM. This might happen when running shared code on the server, or during the bootstrap sequence of a GWTTestCase test.

    - #### isProdMode

          public static boolean isProdMode()

      Returns `true` when running in production mode. Returns `false` when running either in development mode, or when running in a plain JVM.

    - #### isScript

          public static boolean isScript()

      Determines whether or not the running program is script or bytecode.

    - #### log

          public static void log(java.lang.String message)

      Logs a message to the development shell logger in Development Mode. Calls are optimized out in Production Mode.

    - #### log

          public static void log(java.lang.String message,
                 java.lang.Throwable e)

      Logs a message to the development shell logger in Development Mode. Calls are optimized out in Production Mode.

    - #### setBridge

          public static void setBridge(GWTBridge bridge)

      Called via reflection in Development Mode; do not ever call this method in Production Mode. May be called in server code to initialize server bridge.