Using String value as a name of another Variable

Question

I was just simplifying my code and I ran into a small problem which I can't solve. So I have an activity which has a getter like so:

private String[][] Example001 ={{"String1","String2"},{"Light","Normal","Heavy"}};

public String getExerciseValue(String variableName ,int codeOrValue,int type){
        switch (variableName){
            case "Example001":
                return Example001[codeOrValue][type];
            case "Example999"
                return Example999[codeOrValue][type];
        }
        return "default";
    }

so instead of having numerous number of cases, I would rather simplify the code by something like this

public String getExerciseValue(String variableName ,int codeOrValue,int type){
        return variableName[codeOrValue][type];
    }

I ask for an example of working code work this case coz I have no idea how to figure this out. Thanks for any suggestions :)

Does this answer your question? [To use a string value as a variable name](https://stackoverflow.com/questions/20974558/to-use-a-string-value-as-a-variable-name) — micpap25, Nov 29 '20 at 07:05
@micpap25 not really since there was a single variable and I have an array, could you please gimme an example to my case? — Kristian, Nov 29 '20 at 07:14

khesam109 · Answer 1 · 2020-11-29T07:22:42.703

0

Suggest you to use HashMap, and put each array as a value with your preferred name in it. Something like it:

Map<String, String[][]> examples = new HashMap<>();
examples.put("Example001", Example001);

You can then easily retrieve your element with its names and indexes as you needed.

examples.get("Example001")[codeOrValue][type]

edited Nov 29 '20 at 07:22

answered Nov 29 '20 at 07:12

khesam109

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score 0 · Answer 2 · answered Nov 29 '20 at 07:19

This is not possible in Java. However, it is also not necessary.

Whenever you have series of numbered variable names, that's actually just a very cumbersome way of implementing an array:

private String[][][] examples = {
    {
        { "String1", "String2" }, 
        { "Light", "Normal", "Heavy" }
    }
};

public String getExerciseValue(int exampleNumber, int codeOrValue, int type) {
    return examples[exampleNumber - 1][codeOrValue][type];
}

Using String value as a name of another Variable

2 Answers2