If a coder comes to a decision to no longer use HashMap, it turns into important for him to optimize the hash code() and equals() methods. The optimized hash code() technique can facilitate programmers to forestall calls to equals(). The calls to equals () method devour extra memory. Hence, the calls to the dearly-received methodology ought to be reduced to optimize the java utility’s performance.
java programming language is exempted from the pointer concept. it might impact safety and strength via introducing pointers to the java programming language, which could confuse this programming language.