Multiple java ME MIDlet execution in single-instance CLDC JVM

A mobile station comprising:

• a wireless communication interface;
• a processor;
• and
• data storage comprising data and programming instructions for:
• executing exactly one Java Virtual Machine (JVM), wherein the JVM is configured for executing only one MIDlet at any time;
• and
• using the JVM to execute a subMIDlet manager, wherein the subMIDlet manager is a MIDlet, wherein the subMIDlet manager manages lifecycles of each of a plurality of subMIDlets, wherein each subMIDlet is arranged to have its lifecycle managed by the subMIDlet manager, and wherein each subMIDlet is configured for executing only in cooperation with the executing subMIDlet manager;
• wherein the subMIDlet manager is an instance of a subMIDlet manager class, wherein a subMIDlet controller class inherits from the subMIDlet manager class and wherein the subMIDlet controller class provides methods for communication (a) among subMIDlets and (b) between subMIDlets and the subMIDlet manager.

A method comprising:

• converting a plurality of MIDlets into subMIDlets at least in party by replacing calls to a Java Virtual Machine (JVM) with calls to a subMIDlet manager, wherein each subMIDlet is configured for executing only in cooperation with the executing subMIDlet manager;
• instantiating the subMIDlet manager, wherein the subMIDlet manager is a MIDlet;
• creating a composite MIDlet by packaging the subMIDlet manager with the subMIDlets;
• downloading the composite MIDlet to a mobile station capable of executing exactly one JVM, wherein the JVM is configured for executing only one MIDlet at any one time;
• and
• launching the composite MIDlet on the mobile station, Wherein the composite MIDlet enables a user of the mobile station to select multiple subMIDlets to execute simultaneously;
• wherein the subMIDlet manager is an instance of a subMIDlet manager class, wherein a subMIDlet controller class inherits from the subMIDlet manager class and wherein the subMIDlet controller class provides methods for communication (a) among subMIDlets and (b) between subMIDlets and the subMIDlet manager.