Null pointer access: The variable sb can only be null at this location
2017-02-22 18:08
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int[] number = null; 这句不对，数组必须初始化才行，比如 int[] number = new int[3]; 别的类似。 类似还有 StringBuffer sb = null; 没进行实例化 所以需要 StringBuffer sb = new StringBuffer ;
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