String url = "jdbc:mysql://localhost:3306/your_database_name";
public int divide(int num1, int num2) throws ArithmeticException {
System.out.println("当前学生人数:" + count);
//下列递归方法permutatio曾在本公众发过文章/2024澳门历史记录查询,见推荐阅读
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
System.out.println("obj1.hashCode(): " + obj1.hashCode());
new PerformanceOptimization("I/O操作优化", "使用NIO等技术提高I/O操作的效率/2024澳门历史记录查询。"),
import java.util.ArrayList; import java.util.List; public class ListExample { public static void main(String[] args) { List<String> list = new ArrayList<>(); list.add("Apple"); list.add("Banana"); list.add("Cherry"); for (String fruit : list) { System.out.println(fruit); } // 访问和修改指定位置的元素 System.out.println("First element: " + list.get(0)); list.set(0, "Orange"); System.out.println("First element after modification: " + list.get(0)); } }
System.out.println("除数不能为0/2024澳门历史记录查询!");
boolean isLessThanOrEqual = a <= b; // 小于等于