[Solved] Unreachable code in swtch statement

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I suspect you want to add a break; at the end of your case blocks. Otherwise the code just runs from top to bottom (like anywhere else in your code)

If you place a break; it will jump outside the switch block which appears to be what you want.

e.g.

       case AROHA_INCREASING: {
            if (swaraPool.indexOf(endStr) < swaraPool.indexOf(startStr)) {
                System.out.println("End string is before the start String");
                return (-1);
            }
            break; // without this, the thread will run the next case: block.
        }

solved Unreachable code in swtch statement