字符串工具類
阿新 • • 發佈:2017-07-31
temp () logs compile 判斷字符串 matcher public span pack
package com.cmos.ngoc.util; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * 字符串工具類 * */ public final class StringUtil { /** Private Constructor **/ private StringUtil() { } /** * 判斷字符串是否非null && 非空字符 * * @param param * @return*/ public static boolean isNotEmpty(String param) { return param != null && !"".equals(param.trim()); } /** * 判斷字符串是否為null || 空字符串 * * @param param * @return */ public static boolean isEmpty(String param) { return param == null || "".equals(param.trim()); }/** * 判斷是否為數?? * @param str * @return True為數?? */ public static boolean isNum(String str) { String regex = "^(-?\\d+)(\\.\\d+)?$"; return matchRegex(str, regex); } private static boolean matchRegex(String value, String regex) { Pattern pattern= Pattern.compile(regex); Matcher matcher = pattern.matcher(value); return matcher.matches(); } }
字符串工具類