which system table stores the value for SAP class objects' last changed by details ?

[megha_yadav]

i have checked many tables but could not find answer specifically for SAP classes.

[Tomas_Buryanek]

Table SEOCLASSDF field CHANGEDBY has info "Last changed by" of SE24 classes.

[RaymondGiuseppi]

As already written look at table SEOCLASSDF (class def) but look also at a table like VRSD (versions) for subobjects (CPRI, CPRO, CPUB, METH, REPT, etc.)

[Sandra_Rossi]

Do you mean class attributes, source code, list of methods, attributes, events, and so on? Maybe you could use existing existing tools depending on your goal?