CODEWITHSUNDEEP
javaarrayslistloops
Muhammad Imran Tariq
Muhammad Imran Tariq

Reputation: 23352

String list from Object

I am getting Object obj from a method. obj = String[7]. I am having difficulty in getting these 7 Strings and print them.

How can I get Strings out of it?

Upvotes: 0

Views: 155

Answers (3)

Peter Lawrey
Peter Lawrey

Reputation: 533910

If you have no idea whether an array is an Object array or primitive array (which means you can't cast it) You can use the Array class.

Object arr = new int[]{1, 2, 3};
for (int i = 0, len = Array.getLength(arr); i < len; i++)
    System.out.println(Array.get(arr, i));

If you know its a String[], make it that class.

Upvotes: 1

Bohemian
Bohemian

Reputation: 425448

If you're sure you have an array, you could use Arrays.toString():

System.out.println(Arrays.toString((Object[])obj));

Upvotes: 3

Dilum Ranatunga
Dilum Ranatunga

Reputation: 13374

Object obj = ...;
...
if (obj instanceof String[]) {
  for (String element : ((String[]) obj)) { ... }
}

If you need to deal with various types of arrays, I would look into reflection APIs.

Upvotes: 2

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