1.String API：

class StringDemo1115 {
    public static void main(String[] args) {
        String oneName = "XiaoMing";
        System.out.println(oneName.equalsIgnoreCase("xiaoming")); // true
        
        System.out.println(oneName.startsWith("Xiao")); // true
        
        System.out.println(oneName.endsWith("Ming")); // true
        
        String smallerName = "Kong";
        String equalsName = "XiaoMing";
        String biggerName = "Zhong";
        if (oneName.compareTo(biggerName) < 0) {
            System.out.println("smaller than " + biggerName); // smaller than Zhong
        }
        if (oneName.compareTo(smallerName) > 0) {
            System.out.println("bigger than " + smallerName); // bigger than Kong
        }
        if (oneName.compareTo(equalsName) == 0) {
            System.out.println("equals " + equalsName); // equals XiaoMing
        }
    }
}

String部分API 思维导图：