How is String in switch statement more efficient than corresponding if-else statement?

Question

Java documentation says

The Java compiler generates generally more efficient bytecode from switch statements that use String objects than from chaine

Answer 1

This is a bytecode fragment generated from example in the docs:

 INVOKEVIRTUAL java/lang/String.hashCode ()I
    LOOKUPSWITCH
      -2049557543: L2
      -1984635600: L3
      -1807319568: L4

using LOOKUPSWITCH has better perfomance compared to if-else logic