From 07c3db6288cd3d423cfe32a7690ecd07179de254 Mon Sep 17 00:00:00 2001
From: h2linlin <wzh443@126.com>
Date: Thu, 13 May 2021 20:21:03 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200142.=E7=8E=AF=E5=BD=A2?=
 =?UTF-8?q?=E9=93=BE=E8=A1=A8II.md=20Java=E7=89=88=E6=9C=AC?=
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---
 problems/0142.环形链表II.md | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/problems/0142.环形链表II.md b/problems/0142.环形链表II.md
index 9622affc..cd6347ef 100644
--- a/problems/0142.环形链表II.md
+++ b/problems/0142.环形链表II.md
@@ -186,7 +186,35 @@ public:
 
 
 Java：
+```java
+public class Solution {
+    public ListNode detectCycle(ListNode head) {
+        // 1.寻找相遇点
+        ListNode fast = head;
+        ListNode slow = head;
 
+        while (fast != null && fast.next != null) {
+            fast = fast.next.next;
+            slow = slow.next;
+            if (fast != slow) {
+                continue;
+            }
+            ListNode meet = fast;
+
+            // 2.寻找入口点
+            slow = head;
+            while (slow != fast) {
+                slow = slow.next;
+                fast = fast.next;
+            }
+
+            return fast;
+        }
+
+        return null;
+    }
+}
+```
 
 Python：