How switch by String is implemented in Java

StringTest.java

class StringTest {
    public static void main(String[] args) {
        String switchString = "StringTest";

        switch (switchString) {
            case "FirstString": return;
            case "SecondString": return;
            case "StringTest":
                System.out.println("Here it is");
                return;
            default:
                return;
        }
    }
}

StringTest.javap

Compiled from "StringTest.java"
class StringTest {
  StringTest();
    Code:
       0: aload_0       
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: return        

  public static void main(java.lang.String[]);
    Code:
       0: ldc           #2                  // String StringTest
       2: astore_1      
       3: aload_1       
       4: astore_2      
       5: iconst_m1     
       6: istore_3      
       7: aload_2       
       8: invokevirtual #3                  // Method java/lang/String.hashCode:()I
      11: lookupswitch  { // 3
            -539968059: 58
             420381795: 72
             634782401: 44
               default: 83
          }
      44: aload_2       
      45: ldc           #4                  // String FirstString
      47: invokevirtual #5                  // Method java/lang/String.equals:(Ljava/lang/Object;)Z
      50: ifeq          83
      53: iconst_0      
      54: istore_3      
      55: goto          83
      58: aload_2       
      59: ldc           #6                  // String SecondString
      61: invokevirtual #5                  // Method java/lang/String.equals:(Ljava/lang/Object;)Z
      64: ifeq          83
      67: iconst_1      
      68: istore_3      
      69: goto          83
      72: aload_2       
      73: ldc           #2                  // String StringTest
      75: invokevirtual #5                  // Method java/lang/String.equals:(Ljava/lang/Object;)Z
      78: ifeq          83
      81: iconst_2      
      82: istore_3      
      83: iload_3       
      84: tableswitch   { // 0 to 2
                     0: 112
                     1: 113
                     2: 114
               default: 123
          }
     112: return        
     113: return        
     114: getstatic     #7                  // Field java/lang/System.out:Ljava/io/PrintStream;
     117: ldc           #8                  // String Here it is
     119: invokevirtual #9                  // Method java/io/PrintStream.println:(Ljava/lang/String;)V
     122: return        
     123: return        
}