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+package leetcode.reverse_words_in_a_string;%0A%0Aimport java.util.Stack;%0A%0Apublic class Solution %7B%0A%09public String reverseWords(String s) %7B%0A%09%09Stack%3CString%3E ans = new Stack%3CString%3E();%0A        for(String word : s.split(%22 %22))%7B%0A        %09if(!word.isEmpty())%7B%0A        %09%09ans.push(word);%0A        %09%7D%0A        %7D%0A        String prefix = %22%22;%0A        StringBuilder sb = new StringBuilder();%0A        while(!ans.isEmpty())%7B%0A        %09sb.append(prefix);%0A        %09sb.append(ans.pop());%0A        %09prefix = %22 %22;%0A        %7D%0A        return sb.toString();%0A    %7D%0A%0A%09public static void main(String%5B%5D args)%7B%0A%09%09System.err.println(new Solution().reverseWords(%22 the sky is blue   %22));%0A%09%7D%0A%7D%0A

Add java solution for 151. Reverse Words in a String