Download midlet-name

The maximum file length for both the JAD and the JAR file is 16 characters, which includes the four characters for the extension e. JAD or.

You cannot leave an attribute value blank. Classes which are instantiated using the Class. The class name is listed afterward without the. Example shows the manifest information that we would be using if we wanted to download the HelloMidlet application from Chapter 1 to the Motorola i85s.

If they differ, the phone will not install the MIDlet. We have also included the MIDlet class identification information and the profile and configuration version numbers, which we recommend that you include in your MIDlet manifests as well.

With the manifest and the preverified class in the same directory, enter the following command:. In this case, it turned out to be bytes with the additional manifest information. Then use the iDEN software tools to download the application to your phone. Press the soft button to install it. You are now installing your first Java MIDlet on a real device. If everything goes okay, you can run your program after it completes the installation and verification steps. Skip to main content.

Wireless Java by. Start your free trial. Creating MIDlets. Write the MIDlet. Package the application in a JAR file. Create a JAD file. Example Sample MIDlet import javax. Compile the Source Code. Preverify the Class File. Create a JAD File. Simplifying the Development. Deploying MIDlets. Using a data cable or other dedicated physical connection from a local host computer Using a network to which the device is intermittently connected.

In addition, each portion of the version number is allowed a maximum of two decimal digits i. For example, 1. For each portion of the version number, leading zeros are not significant. For example, 08 is equivalent to 8. Also, 1. However, 1. A missing MIDlet-Version tag is assumed to be 0.

The manifest provides information about the contents of the JAR file. An attribute MUST not appear more than once within the manifest. If an attribute is duplicated the effect is unspecified. For example, a manifest for a hypothetical suite of card games would look like the following example:.

All Java classes needed by the MIDlet are be placed in the JAR file using the standard structure, based on mapping the fully qualified class names to directory and file names. For example, a class com. The application descriptor is used in conjunction with the JAR manifest by the application management software to manage the MIDlet and is used by the MIDlet itself for configuration specific attributes. The descriptor allows the application management software on the device to verify that the MIDlet is suited to the device before loading the full JAR file of the MIDlet suite.

It also allows configuration-specific attributes parameters to be supplied to the MIDlet s without modifying the JAR file. A predefined set of attributes is specified to allow the application management software to identify, retrieve, and install the MIDlet s. All attributes appearing in the descriptor file are made available to the MIDlet s.

The developer may use attributes not beginning with MIDlet- or MicroEdition- for application-specific purposes. Attribute names are case-sensitive and MUST match exactly. Duplication of other manifest attributes in the application descriptor is not required and their values MAY differ even though both the manifest and descriptor files contain the same attribute for untrusted MIDlet suites.

If the MIDlet suite is not trusted the value from the descriptor file will override the value from the manifest file. Generally speaking, the format of the application descriptor is a sequence of lines consisting of an attribute name followed by a colon, the value of the attribute, and a carriage return. White space is ignored before and after the value.

The order of the attributes is arbitrary. For example, an ISO encoded file would need to be read through the equivalent of java. InputStreamReader with the appropriate encoding.

The default character encoding for transporting a descriptor is UTF For example, an application descriptor for a hypothetical suite of card games would look look like the following example:. The MIDlet can request the arguments from the application descriptor to communicate with the application management software. If it exists, it MUST be ignored by the application management software. When a MIDlet suite is installed on a device, its classes, resource files, arguments, and persistent storage are kept on the device and ready for use.

The MIDlet s are available to the user via the device's application management software. The MIDlet can either request changes in state or notify the application management software of state changes via the MIDlet methods. When the MIDlet is finished or terminated by the application management software, it is destroyed, and the resources it used can be reclaimed, including any objects it created and its classes.

The normal states of Java classes are not affected by these classes as they are loaded. Referring to any class will cause it to be loaded, and the normal static initialization will occur. Extended by a MIDlet to allow the application management software to start, stop, and destroy it.

The MIDlet can signal the application management software about whether is it wants to run or has completed. More specific application states are known only to the application. The MIDlet state machine is designed to ensure that the behavior of an application is consistent and as close as possible to what device manufactures and users expect, specifically:.

The MIDlet is initialized and is quiescent. MIDlet s should perform any operations required before being terminated, such as releasing resources or saving preferences or state. This is only a valid response if the unconditional flag is set to false. If it is true the MIDlet is assumed to be in the Destroyed state regardless of how this method terminates. This request may be honored and the destroy method called again at a later time.

Parameters: unconditional - If true when this method is called, the MIDlet must cleanup and release all resources. This exception is ignored if unconditional is equal to true. The application management software will not call the MIDlet's destroyApp method, and all resources held by the MIDlet will be considered eligible for reclamation. The MIDlet must have performed the same operations clean up, releasing of resources etc. Invoking this method will have no effect if the MIDlet is destroyed, or if it has not yet been started.

It may be invoked by the MIDlet when it is in the Active state. If a MIDlet calls notifyPaused , in the future its startApp method may be called make it active again, or its destroyApp method may be called to request it to destroy itself. If the application pauses itself it will need to call resumeRequest to request to reenter the active state.

The properties are retrieved from the combination of the application descriptor file and the manifest. If they differ, the MIDlet will not be installed on the device. For untrusted applications, if an attribute in the descriptor has the same name as an attribute in the manifest the value from the descriptor is used and the value from the manifest is ignored. Parameters: key - the name of the property Returns: A string with the value of the property.

Throws: NullPointerException - is thrown if key is null. Calls to this method can be used by the application management software to determine which applications to move to the Active state.

When the application management software decides to activate this application it will call the startApp method.