使用Java进行不区分大小写的搜索

public class CaseInsensitiveSearch {
    public static void main(String[] args) {
        String targetString = "Hello World";
        String searchString = "hello";

        // 将目标字符串和搜索字符串都转换为小写
        String targetLower = targetString.toLowerCase();
        String searchLower = searchString.toLowerCase();

        // 使用equals()方法进行搜索
        boolean isEqual = targetLower.equals(searchLower);
        System.out.println("Equals: " + isEqual);

        // 使用contains()方法进行搜索
        boolean contains = targetLower.contains(searchLower);
        System.out.println("Contains: " + contains);

        // 使用正则表达式进行搜索
        boolean regexMatch = targetString.matches("(?i).*" + searchString + ".*");
        System.out.println("Regex Match: " + regexMatch);
    }
}