JavaのStringクラスのreplace()関数を使用して文字列内の特定の文字を置換する方法

public class ReplaceExample {
    public static void main(String[] args) {
        String originalString = "Hello, Java!";
        String replacedString = originalString.replace("Java", "World");
        
        System.out.println("原字符串：" + originalString);
        System.out.println("替换后的字符串：" + replacedString);
    }
}

public class ReplaceExample {
    public static void main(String[] args) {
        String originalString = "I love apples!";
        String replacedString = originalString.replace("apples", "oranges");
        
        System.out.println("原字符串：" + originalString);
        System.out.println("替换后的字符串：" + replacedString);
    }
}

public class ReplaceExample {
    public static void main(String[] args) {
        String originalString = "Hello, Java!";
        String replacedString = originalString.replaceAll("a", "A");
        
        System.out.println("原字符串：" + originalString);
        System.out.println("替换后的字符串：" + replacedString);
    }
}