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这次给大家带来使用正则判断字符串是否能转为数字,使用正则判断字符串是否能转为数字的注意事项有哪些,下面就是实战案例,一起来看一下。
代码如下所示:
package java_test; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * @author: gznc_pcc * @date:2018年6月1日 10:50:38 * @version : * */ class Main { public static void main(String[] args) { String lineString = "[\"1\"]"; String line = "[\"on\",\"1\",\"5\",\"8\",\"10\"]"; lineString = line.replaceAll("[\"\\[\\]]", "");//用""替换" [ ] String[] word = lineString.split(","); //以,切割 System.out.println(lineString); for(int i=0;i<word.length;i++){ Pattern pattern = Pattern.compile("[0-9]*"); //正则,匹配数字 Matcher matcher = pattern.matcher(word[i]); if(matcher.matches()){ System.out.println("1:可以转换"); System.out.println(Integer.parseInt(word[i])); } else { System.out.println("2:不能转换"); System.out.println(word[i]); } } } }
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