publicclassFindCharacterInString{publicstaticvoidmain(String[]args){Stringstr="Hello, World!";// 定义字符串charch='o';// 定义要查找的字符intindex=str.indexOf(ch);// 使用indexOf()查找字符if(index!=-1){System.out.println("字符 '"+ch+"' 在字符串中的位置是:"+index);}else{System.out....
Java Oracle Java is the #1 programming language and development platform. It reduces costs, shortens development timeframes, drives innovation, and improves application services. Java continues to be the development platform of choice for enterprises and developers....
int first = strinfo.find_first_of(strset); if (first == string::npos) { cout << "not find any characters" << endl; return -1; } int last = strinfo.find_last_of(strset); if (last == string::npos) { cout << "not find any characters" << endl; return -1; } cout << s...
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...
GroovyClassLoader groovyClassLoader=newGroovyClassLoader();String helloScript="package com.vivo.groovy.util"+// 可以是纯Java代码"class Hello {"+"String say(String name) {"+"System.out.println(\"hello, \" + name)"+" return name;""}"+"}";Class helloClass=groovyClassLoader.parseClass(hell...
In this blog post, we introduce the new installer for Oracle Management Agent (OMA) in Java Management Service (JMS), highlighting its enhanced reliability, efficiency, and user-friendliness. The step-by-step guide simplifies the process, ensuring seamless installation and configuration, leading to…...
Write a Java program to find the first non-repeating character in a string. Visual Presentation: Sample Solution: Java Code: // Importing necessary Java utilities.importjava.util.*;// Define a class named Main.publicclassMain{// Main method to execute the program.publicstaticvoidmain(String[]...
find()); //不包含Java Matcher matcher2 = pattern.matcher("Python, C, Go, Matlab"); assertFalse(matcher2.find()); 2.4 Apache库StringUtils.contains Apache的commons-lang3提供许多开箱即用的功能,StringUtils就提供了许多与字符串相关的功能,例子如下: assertTrue(StringUtils.contains("String subString"...
public static void main(String args[]) { printDuplicateCharacters("Programming"); printDuplicateCharacters("Combination"); printDuplicateCharacters("Java"); } /* * Find all duplicate characters in a String and print each of them. */ public static void printDuplicateCharacters(String word) { ...
public static String[] regex(String regex, String from) { Pattern pattern = Pattern.compile(regex); Matcher matcher = pattern.matcher(from); List<String> results = new ArrayList<String>(); while (matcher.find()) { for (int i = 0; i < matcher.groupCount(); i++) { results.add(match...