publicclassDatabaseSearchimplementsSearch{@OverridepublicList<String>searchDoc(String keyword){System.out.println("数据搜索 "+keyword);returnnull;}} resources 接下来可以在resources下新建META-INF/services/目录,然后新建接口全限定名的文件:com.cainiao.ys.spi.learn.Search,里面加上我们需要用到的实现类 代码...
publicbooleanequals(Object anObject){if(this==anObject){returntrue;}if(anObjectinstanceofString){String anotherString=(String)anObject;int n=value.length;if(n==anotherString.value.length){char v1[]=value;char v2[]=anotherString.value;int i=0;while(n--!=0){if(v1[i]!=v2[i])returnfa...
Create [ kri’eit ] 创造,创作 Builder ['bildə] Java中为 “缓冲器”, 直译为建筑者 StringBuffer 字符串缓冲区(同步的) StringBuilder 字符串缓冲区(不同步的) char [tʃɑ:] 字符型 character ['kærəktə] 字符 int [int] 整型 integer ['intidʒə] 整数类型 parse [pɑ:z] 解...
packagecom.example.webdemo.entity;importcom.example.webdemo.enumeration.GenderEnum;importlombok.Data;@DatapublicclassUser{privateLong id;privateString name;privateInteger age;privateGenderEnum gender; } 数据库中字段 sql CREATETABLE`t_user` ( `id`bigintunsignedNOTNULLAUTO_INCREMENT, `name`varchar(255)...
byte[bait] 字节 short[ʃɔ:t] 短整型 int [int] 整型 long[lɔ:ŋ] 长整形 char[tʃɑ:] 字符型 String[striŋ] 字符串类型 float[fləut] 单精度浮点类型 double['dʌbl] 双精度浮点型,双倍 type [taip] 类型 boolean['bu:li:ən] 布尔类型真假二值 ...
importjava.util.Enumeration;importjava.util.StringTokenizer;importjava.util.Vector;publicclassStringToEnumeration{publicstaticvoidmain(String[]args){Stringstr="apple,orange,banana";// 使用StringTokenizer类将字符串按逗号分隔StringTokenizertokenizer=newStringTokenizer(str,",");Vector<String>vector=newVector<...
*@create2017-12-25 **/publicclassEnumerationTest{publicstaticvoidmain(String[] args){Vectorv=newVector(); v.add("Jack"); v.add("ate"); v.add("lots of oranges."); Enumeration<String> e = v.elements();Stringoutput="";while(e.hasMoreElements()) { ...
_enumeration接口_Vector_StringTokenizer https://www.sxt.cn/ 本教程是第二季,Java基础必备。文档资料在这儿https://www.sxt.cn/Java_jQuery_in_action/thirteen-student-development.html
Enumeration<String>fruitEnumeration=Collections.enumeration(fruitList); 1. 现在,fruitEnumeration就是我们要的String类型转换为Enumeration类型的结果。 代码示例 下面是完整的代码示例,包括上述的三个步骤: AI检测代码解析 importjava.util.Arrays;importjava.util.Collections;importjava.util.Enumeration;importjava.util....
Stringname() Returns the name of this enum constant, exactly as declared in its enum declaration. intordinal() Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero). ...