FAQ: Learn Java: ArrayLists - Getting an Item's Index

This community-built FAQ covers the “Getting an Item’s Index” exercise from the lesson “Learn Java: ArrayLists”.

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I’m positive there are other ways to solve this in one line of code or in just a more concise way but this is my solution for step 8/9:

// Calculate to-dos until case is solved:
    int solveIdx = sherlocksToDos.indexOf("solve the case");
    // Change the value printed:

something like this would be a one line solution:

System.out.println(sherlocksToDos.indexOf("solve the case"));

It should be 4, not 3:

    // Calculate to-dos until case is solved:
    int toDosUntilSolved = sherlocksToDos.indexOf("solve the case") + 1;
    // Change the value printed:

Actually no, one item in ArrayList is removed before calculating indexOf() :slight_smile: