short and efficient code in java
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\n    public int countSeniors(String[] details) {\n        int c=0;\n        for (String d : details) {\n        int age= Integer.parseInt(d.substring(11,13));\n        if(age>60){\n            c++;\n        }\n        }\n        return c;\n    }\n}\n```
['Array', 'String', 'Java']