It depends with what programming language you compare it with. For example, C++ has a higher entry threshold than Java and, accordingly, it will be more difficult to master.
Python has a lower entry threshold, but because of the punning syntax, the beginner can be more confused.
JavaScript is complex both in understanding and in syntax.
Java has an average entry threshold. Due to its strict syntax, Java is much easier to understand. Therefore, we recommend Java as the first studied programming language, since it is optimal.