Both Arrays.toString(Object[]) and Arrays.deepToString(Object[]) handle null array gracefully, simply returning a String “null”. I tend to use Java Collections far more than I use Java arrays.

} OUTPUT: Single-dimensional array: 1 2 3 4 5 Two-dimensional array: 1 2 3 4 5 6 7 8 9 Multi-dimensional array (3D): 1 2 3 4 5 6 7 8 9 10 11 12 ...

It join two strings together and made a single string. Example: // Scala program of concat () method // Creating Object objectGFG { // Main method defmain (args: Array [String]) { // Concatenate two ...