Talend Studio is a code generator and creates Java code for each Talend Job. Each subjob is a method in the Job class. If a subjob is too big, the size of the final generated code will exceed 65536 bytes.
According to Java specifications, the amount of code for this non-native, non-abstract method is limited to a size of 65536 bytes, so the generated code of a subjob cannot be greater than this limit.
You need to optimize the Job to reduce the size of the final generated code of a subjob, maybe try to divide the subjob into several subjobs or minimize the number of components in the subjob.
