Sequence analysis method and sequence analysis apparatus

Overall sequence of a system designed using an object-oriented language is analyzed so as to permit easy comprehension. Class name acquisition means (2a) of a sequence analysis apparatus (2) acquires class names included in sequence diagrams (1a-1d). Instance name acquisition means (2b) acquires instance names included in the sequence diagrams (1a-1d), and method name acquisition means (2c) acquires method names included in the sequence diagrams (1a-1d). Call relationship acquisition means (2d) acquires call relationships of methods included in the sequence diagrams (1a-1d). Sequence table display means (2e) looks up the thus-acquired class names, instance names, method names and call relationships, to generate and display a sequence table (3) showing a tabulated list of the call relationships of the method.