public static final String GREETING = "Hello, World!";
System.out.println("Rectangle Details:");
// Method to add three integers
Thread.sleep(2000); // 模拟异步任务耗时操作
long daysBetween = ChronoUnit.DAYS.between(twoYearsAgo, fiveDaysLater);
泛型类是在类声明时定义类型参数的类/澳门六开彩开奖结果查询2021年。这些类型参数在类的方法、变量和构造函数中用作类型。以下是一个简单的泛型类的示例:
double area = Math.PI * radius * radius;