Trying to use the String of a name to call an array

Question

Is there a way to do this? I'm trying to call an array using a String of it's name

  public static void main(String [] args)
  {
    int [] temp=new int [1];
    temp[0]=1;
      String a="temp";

      System.out.println(a[0]);
     }

This is not possible in Java because Java is not a dynamic language. This is what `Map<>` data structures are for. This is also an example of an [XY Problem](http://xyproblem.info). If you would explain what you _really_ want to accomplish we might be able to help, but with such a bare bones example all we can say is "You can't do that in Java". I suggest you flesh out the question with a meaningful example, or risk attracting downvotes. — Jim Garrison, Mar 09 '16 at 22:11
Similarly: [Assigning variables with dynamic names in Java](http://stackoverflow.com/questions/6729605/assigning-variables-with-dynamic-names-in-java). — azurefrog, Mar 09 '16 at 22:13
Possible duplicate of [Get variable by name from a String](http://stackoverflow.com/questions/13298823/get-variable-by-name-from-a-string) — fabian, Mar 09 '16 at 22:19

score 0 · Answer 1 · answered Mar 09 '16 at 22:14

0

NO this is not possible as the variable names cannot be declared dynamically in Java.

answered Mar 09 '16 at 22:14

Rishi

1,163
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12

score 0 · Answer 2 · edited May 23 '17 at 12:23

Try using a HashMap it is similar to what your looking for.

public static void main(String... args) {
    HashMap<String, Integer> test = new HashMap<String, Integer>();
    test.put("Temp", 1);
    test.put("Temp2", 2);

    System.out.println(test.get("Temp")); // returns one

    HashMap<Integer, String> test2 = new HashMap<Integer, String>();
    test2.put(1, "Temp");
    test2.put(2, "Temp2");

    System.out.println(test2.get(1)); // returns one
}

This is an interesting question if you want to know the differences between Map vs HashMap.

What is the difference between the HashMap and Map objects in Java?

Trying to use the String of a name to call an array

2 Answers2