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..f3e9cf38 100644
--- a/problems/0977.有序数组的平方.md
+++ b/problems/0977.有序数组的平方.md
@@ -98,6 +98,26 @@ public:
 
 
 Java：
+```Java
+class Solution {
+    public int[] sortedSquares(int[] nums) {
+        int right = nums.length - 1;
+        int left = 0;
+        int[] result = new int[nums.length];
+        int index = result.length - 1;
+        while (left <= right) {
+            if (nums[left] * nums[left] > nums[right] * nums[right]) {
+                result[index--] = nums[left] * nums[left];
+                ++left;
+            } else {
+                result[index--] = nums[right] * nums[right];
+                --right;
+            }
+        }
+        return result;
+    }
+}
+```
 
 Python：
 ```Python