diff --git a/problems/0977.有序数组的平方.md b/problems/0977.有序数组的平方.md
index b5d392e6..d28a9427 100644
--- a/problems/0977.有序数组的平方.md
+++ b/problems/0977.有序数组的平方.md
@@ -96,9 +96,27 @@ public:
 
 ## 其他语言版本
 
-
 Java：
 
+```java
+class Solution {
+    public int[] sortedSquares(int[] nums) {
+        int l = 0;
+        int r = nums.length - 1;
+        int[] res = new int[nums.length];
+        int j = nums.length - 1;
+        while(l <= r){
+            if(nums[l] * nums[l] > nums[r] * nums[r]){
+                res[j--] = nums[l] * nums[l++];
+            }else{
+                res[j--] = nums[r] * nums[r--];
+            }
+        }
+        return res;
+    }
+}
+```
+
 Python：
 ```Python
 class Solution: