I am working on something where i need to search and replace many variable names of a program.
I have a class Hello and its public variable is world, but the variable world has been changed to earth so now in the program i need to go and replace the world variable with earth. this is just one example but there are many different variables to be replaced.
Hello.world replace by Hello.earth
variables to be replaced. code ..... Hello.world replace by Hello.earth code ....
so far i have a 2D array with old variable name and new variable name
but i am not able to find the strings such as world since it is in a single word Hellol.world
Please help on how to look for world in AnyClassName.old_VariableName and replace it by AnyClassName.new_VariableName