Initialize array at runtime

Just want to know if its possible to initialize array at runtime?

Yes.

Code:

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class Pseudo {
    int[] sizes;
    String[] ids = new String[0];

    // somewhere later
    sizes = new int[16];
    ids = new String[4];

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javaplus, this is the wrong forum for this post. "Java Tips" forum is not for asking questions. Please be more careful next time..