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
*/publicstaticSet<String>readJarFile(String jarAddress)throws IOException{Set<String>classNameSet=newHashSet<>();try(JarFile jarFile=newJarFile(jarAddress)){Enumeration<JarEntry>entries=jarFile.entries();//遍历整个jar文件while(entries.hasMoreElements()){JarEntry jarEntry=entries.nextElement();Stri...
// The first position of an element // is returned System.out.println("The first occurrence of Geeks is at index:" + list.indexOf("Geeks")); System.out.println("The first occurrence of 10 is at index: " + list.indexOf("10")); } } 输出: LinkedList:[Geeks, for, Geeks, 10, 2...
It enables you to specify an argument (in the <fx:deploy> element) for the bundler that is used to create self-contained applications.Change in javax.smartcardio.Card.disconnect(boolean reset) method behaviorPrior to the JDK 8u20 and JDK 7u72 releases, the javax.smartcardio.Card.disconnect(...
1.ArrayList.indexOf()API TheindexOf()returns the index of the first occurrence of the specified element in this list. It will return'-1'if the list does not contain the element. publicintindexOf(Objecto); TheindexOf()takes only a single argumentobjectwhich needs to be searched in the ...
find <-targetDir-> -name "*.jar" -exec jar -tf {} > ./tmpfile-multi-jar-classes.txt \;step3 从临时文件中查找是否存在目标类 # cat ./tmpfile-multi-jar-classes.txt | grep -i "<keyword>" [root@sdc70 ~]# cat ./tmpfile-multi-jar-classes.txt | grep -i "HttpHeaderSecurityFilter...
();}}//静态绑定操作:找到与slf4j相结合的日志框架;privatefinalstaticvoidbind(){try{//在类路径下,查找org.slf4j.impl.StaticLoggerBinder类:Set<URL>staticLoggerBinderPathSet=findPossibleStaticLoggerBinderPathSet();//遍历Set集合,并将其中StaticLoggerBinder类的路径打印出来:reportMultipleBindingAmbiguity(...
Stream; public class LastElementFinder { public static <T> Optional<T> findLastElement(Stream<T> stream) { return stream.reduce((first, second) -> second); } public static void main(String[] args) { Stream<Integer> stream = Stream.of(1, 2, 3, 4, 5); Optional<Integer> lastElement...
System.out.println("LinkedList:" + list); // The first position of an element // is returned System.out.println("The first occurrence of Geeks is at index:" + list.indexOf("Geeks")); System.out.println("The first occurrence of 10 is at index: " ...
In the code snippet above, we created anIntegerarray namedarray1, which contains a sequence of numbers. To find the index of a specific element (in this case,8), we first converted thearray1into anArrayListusingArrays.asList(array1). This conversion is necessary because theindexOf()method ...