PROGRAM EXECUTION PROCEDURE AND STORAGE MEDIUM WITH THE PROGRAM EXECUTION PROCEDURE STORED THEREIN

摘要

PROBLEM TO BE SOLVED: To provide a program execution procedure which enables easy and efficient debug of an application program in a program execution environment. SOLUTION: The program execution environment constituted of a Java virtual machine 4 is provided with a normal interpreter 5 for interpreting a thread by a normal interpreter format and executing the thread (1) and a tracing interpreter 6 for tracing the thread by executing a program having a tracing function for each line or for each instruction and outputting the contents of a memory to the external (2). Both the interpreters 5, 6 can be mutually switched, the normal interpreter 5 can execute the thread and the tracing interpreter 6 can trace and debug the thread.