Comparison of files in linux using the same method

Compare files in linux in the same way 1. cmpJava code cmp-sfile1file2echo $? 2. diffJava code difffile1file2 outputs different content 3. md5sumJava code md5sumfile1file2 if the md5 value is the same, it can be considered that the content is the same in linux. is the comparison file in the same way? 1.cmp Java code cmp-s file1 file2 echo $? 2. diff Java code diff file1 file2 output different content 3. md5sum Java code md5sum file1 file2 if the md5 value is the same, the content can be considered the same