Java Regular Expression Verification

Public class Regex {/*** check whether email input is correct * correct format: username @ domain * @ param value * @ return */public boolean checkEmail (String value, int length) {return value. matches ("\ w + ([-+.] \ w +) * @ \ w + ([-.] \ w + )*\\. \ w + ([-.] \ w +) * ") & value. length () <= length ;} /*** check whether the phone number is entered correctly * correct format 012-87654321, 0123-87654321, 0123-7654321 * @ param value * @ return */public boolean checkTel (String value) {return value. matches ("\ d {4 }-\ \ D {8} | \ d {4}-\ d {7} | \ d (3)-\ d (8 )");} /*** check whether the mobile phone input is correct ** @ param value * @ return */public boolean checkMobile (String value) {return value. matches ("^ [1] [3, 5] + \ d {9 }");} /*** check whether the Chinese name is entered correctly ** @ param value * @ return */public boolean checkChineseName (String value, int length) {return value. matches ("^ [\ u4e00-\ u9fa5] + $") & value. length () <= length;}/*** check the first and last blank lines or spaces in HTML * @ param value * @ return */public boolean checkBl Ank (String value) {return value. matches ("^ \ s * | \ s * $ ");} /*** check whether the String contains the HTML Tag * @ param value * @ return */public boolean checkHtmlTag (String value) {return value. matches ("<(\ S *?) [^>] *> .*? </\ 1> | <.*? /> ");}/*** Check whether the URL is valid * @ param value * @ return */public boolean checkURL (String value) {return value. matches ("[a-zA-z] +: // [^ \ s] *");} /*** check whether the IP address is valid * @ param value * @ return */public boolean checkIP (String value) {return value. matches ("\ d {1, 3} + \\. \ d {1, 3} + \\. \ d {1, 3} + \\. \ d {1, 3} ");}/*** check whether the ID is valid and must start with a uppercase/lowercase letter, other characters can contain uppercase and lowercase characters, numbers, and underscores * @ param value * @ return */public boolean checkID (String value) {return value. matche S ("[a-zA-Z] [a-zA-Z0-9 _] {} $");}/*** check if QQ is valid and must be a number, and the first digit cannot be 0, and the maximum length is 15 * @ param value * @ return */public boolean checkQQ (String value) {return value. matches ("[1-9] [0-9] {4, 13 }");} /*** check whether the zip code is valid * @ param value * @ return */public boolean checkPostCode (String value) {return value. matches ("[1-9] \ d {5 }(?! \ D) ");}/*** check whether the ID card is valid, 15 or 18 digits * @ param value * @ return */public boolean checkIDCard (String value) {return value. matches ("\ d {15} | \ d {18 }");} /*** check whether the input exceeds the specified length * @ param value * @ return */public boolean checkLength (String value, int length) {return (value = null | "". equals (value. trim ()))? 0: value. length () <= length;}/*** check whether it is a Null String, null: true, not null: false ** @ param value * @ return */public boolean checkNull (String value) {return value = null | "". equals (value. trim ());}}

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