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java中如何判断字符串是否是int
1.用JAVA自带的函数public static boolean isNumeric(String str){for (int i = 0; i < str.length(); i++){System.out.println(str
1.用JAVA自带的函数public static boolean isNumeric(String str){for (int i = 0; i < str.length(); i++){System.out.println(str