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Split a string into array without empty element

Attempting to split a string into separated letters String string1 ="KKXGJRNQGA"; List solutionArray = Arrays.asList(string1.split("")); will return `[, K, K, X, G, J, R, N, Q, G, A]` before each alphabet a space and at [0] is an empty element. But actually i want is `[K,K,X,G,J,R,N,Q,G,A]`, is there a way to solve it? can using regex match?

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