51、Java字符串处理：String类与StringBuilder类的全面解析

Java字符串处理：String类与StringBuilder类的全面解析

1. String类方法详解

1.1 startsWith和endsWith方法

startsWith 和 endsWith 方法用于检查字符串是否以指定的字符或子字符串开头或结尾。以下是示例代码：

// 示例代码，假设存在字符串数组
String[] strings = {"started", "starting", "ended"};
for (String str : strings) {
    if (str.startsWith("st")) {
        System.out.println(str + " starts with \"st\"");
    }
    if (str.startsWith("art", 2)) {
        System.out.println(str + " starts with \"art\" at position 2");
    }
    if (str.endsWith("ed")) {
        System.out.println(str + " ends with \"ed\"");
    }
}

运行结果：

started starts with "st"
starting starts with "st"
started starts with "art" at po