Java:
搜索和替换文本

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SearchAndReplace {
    public static void main(String[] args) {
        String text = "Hello, World! Hello, Java World!";
        String searchFor = "World";
        String replaceWith = "Programmer";

        String replacedText = text.replace(searchFor, replaceWith);
        System.out.println(replacedText);  // Outputs: Hello, Programmer! Hello, Java Programmer!

        // 用正则表达式来搜索和替换
        String regexText = "Coding in 2023, Coding in Java!";
        Pattern pattern = Pattern.compile("\\d{4}");
        Matcher matcher = pattern.matcher(regexText);
        String updatedText = matcher.replaceAll("202X");
        System.out.println(updatedText);  // Outputs: Coding in 202X, Coding in Java!
    }
}