From 1a16c119a39f1929af9294b653385defa7c904f3 Mon Sep 17 00:00:00 2001
From: KailokFung <jialuo_feng@foxmail.com>
Date: Sun, 27 Jun 2021 15:44:40 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E4=BA=8C=E5=8F=89=E6=A0=91=E7=90=86?=
 =?UTF-8?q?=E8=AE=BA=E5=9F=BA=E7=A1=80.md):=20=E6=96=B0=E5=A2=9Ejava?=
 =?UTF-8?q?=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
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---
 problems/二叉树理论基础.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/problems/二叉树理论基础.md b/problems/二叉树理论基础.md
index 55383e91..d4dfe0c6 100644
--- a/problems/二叉树理论基础.md
+++ b/problems/二叉树理论基础.md
@@ -188,6 +188,21 @@ struct TreeNode {
 
 Java：
 
+```java
+public class TreeNode {
+    int val;
+  	TreeNode left;
+  	TreeNode right;
+  	TreeNode() {}
+  	TreeNode(int val) { this.val = val; }
+  	TreeNode(int val, TreeNode left, TreeNode right) {
+    		this.val = val;
+    		this.left = left;
+    		this.right = right;
+  	}
+}
+```
+
 
 Python：