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LeapYear.java

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+public class LeapYear {
+        public static void main(String[] args) {
+            Scanner scan = new Scanner(System.in);
+            System.out.print("请输入2000~3000内的年数!");
+            int year = scan.nextInt();
+            scan.close();
+
+
+            if (year < 2000 || year > 3000) {
+                System.out.println("请输入2000~3000内的年数!");
+                return;
+            }
+
+
+            boolean isLeap = false;
+            if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
+                isLeap = true;
+            }
+
+
+            if (isLeap) {
+                System.out.println(year + "年是闰年");
+            } else {
+                System.out.println(year + "年不是闰年");
+            }
+        }
+    }