Abstract: A mobile terminal and an operation method for the same based on memory state changes are provided. The operation method includes detecting a transition between memory states of a memory unit; performing operation control by placing and releasing memory usage restrictions on and from at least one of an application program previously loaded in the memory unit and an application program newly loaded in the memory unit based on the detected memory state transition.

Abstract: A method and apparatus for easily setting desired contents within a text in a portable terminal is provided. The method includes determining a first position on a first row of the text, determining a second position on a second row of the text, and selecting contents located between the first position and the second position.

Abstract: An apparatus and method for checking an idle period of a virtual machine, and a computer readable recording medium for embodying the method. The apparatus includes a thread counting unit which counts a total number of threads that are under execution and a monitor thread which detects the idle period of the virtual machine based on the total number of threads that are under execution.

Abstract: A method and apparatus for adaptive garbage collection in dynamic memory allocation. The method includes allocating a portion of a first memory space to a new object in response to a request from a predetermined process, copying objects used by the predetermined process among all objects occupying the first memory space to a second memory space, and adjusting the size of the first memory space and the size of the second memory space according to predetermined information.

Abstract: Provided are an apparatus and method for managing resources using virtual ID in a multiple Java application environment, and more particularly, an apparatus and method for allocating or de-allocating resources using a virtual ID in a multiple Java application environment, thereby effectively using the resource. The apparatus includes a resource managing unit requesting an operating system to allocate or de-allocate a resource when an application requests to allocate or de-allocate the resource; a virtual ID generating unit generating virtual ID corresponding to the resource allocated from the operating system; and an ID searching unit searching whether the virtual ID exists when the application requests to de-allocate the resource using the virtual ID.

Abstract: A method and apparatus for adaptive garbage collection in dynamic memory allocation. The method includes allocating a portion of a first memory space to a new object in response to a request from a predetermined process, copying objects used by the predetermined process among all objects occupying the first memory space to a second memory space, and adjusting the size of the first memory space and the size of the second memory space according to predetermined information.

Abstract: A method and system for improving the performance of a Java virtual machine includes extracting a byte-code of a method constituting a Java class; combining the extracted byte-code to generate a second code with a predetermined byte size and allocating the second code to a data structure of a predetermined type; and executing the second code by an execution engine employed in the Java virtual machine.