Split(String) 將這個字串分割為指定正則表達式的相符專案。 Split(String, Int32) 將這個字串分割為指定正則表達式的相符專案。 StartsWith(String) 測試此字串是否以指定的前置詞開頭。 StartsWith(String, Int32) 測試此字串的子字串是否以指定的前置詞開頭。 Strip() 傳回字串,其值為這個字串,並移除所有...
String replace(CharSequence original,CharSequence replacement) (8)trim()去掉起始和结尾的空格 (9)valueOf()转换为字符串 (10)toLowerCase()转换为小写 (11)toUpperCase()转换为大写 (12)startsWith()和endsWith() startsWith()方法决定是否以特定字符串开始,endWith()方法决定是否以特定字符串结束 更多方法请...
description="Passwords must contain at least one numeric")publicbooleanvalidatePassword(String passwd){return(passwd.matches("\\w*\\d\\w*"));}@UseCase(id=48)publicStringencryptPassword(String passwd){returnnewStringBuilder(passwd).reverse().toString();}@UseCase(id=49,description="New passwords...
startsWith(string); // 判断字符串的开始 str.endsWith(string); // 判断字符串的结尾 str.equals(str2); // 判断字符串相等 str.equalsIgnoreCase(str2); // 忽略大小写的判断字符串相等 str.compareTo(str1); // 比较字符串 str.toLowerCase(); // 转为小写 str.toUpperCase(); // 转为大写 ...
1)String trim()//截去字符串两端的空格,但对于中间的空格不处理。 1String str ="a sd";2String str1 =str.trim();3inta = str.length();//a = 64intb = str1.length();//b = 4 2)boolean startsWith(String prefix)或boolean endWith(String suffix)//用来比较当前字符串的起始字符或子字符串...
class WrapperClassTest { public static void main(String[ ] args) { Integer i = new Integer(10); //从 java9 开始被废弃 Integer j = new Integer(50); } } 内存分析图: 10.1.2 包装类的用途 对于包装类来说,这些类的用途主要包含两种: 作为和基本数据类型对应的类型存在,方便涉及到对象的操作,...
Tests if this string starts with the specified prefix. booleanstartsWith(String prefix, int toffset) Tests if the substring of this string beginning at the specified index starts with the specified prefix. Stringstrip() Returns a string whose value is this string, with all leading and traili...
nullHandler:Null 值处理方式,枚举类型,有两个可选值,INCLUDE(包括)、IGNORE(忽略)。 标识作为条件的实体对象中,一个属性值(条件值)为 Null 时,是否参与过滤; 当该选项值是 INCLUDE 时,表示仍参与过滤,会匹配数据库表中该字段值是 Null 的记录; 若为IGNORE 值,表示不参与过滤。 defaultStringMatcher:默认字符串...
Java Family VersionSecurity Baseline (Full Version String) 7 1.7.0_441-b08 Keeping the JDK up to Date Oracle recommends that the JDK is updated with each Critical Patch Update. In order to determine if a release is the latest, the Security Baseline page can be used to determine which is ...
Have we really invested all this effort in regex technology just to be able to do what we could already do with the java.lang.String method startsWith()? Hmmm, I can hear some of you getting a bit restless. Stay in your seats! What if you wanted to match not only a letter T in ...