diff --git a/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README.md b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README.md
index 7a62b4fcf7c8c..59b8e45e1dd8c 100644
--- a/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README.md	
+++ b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README.md	
@@ -68,7 +68,19 @@
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public int numberOfSteps(int num) {
+        int cnt = 0;
+        while (num != 0) {
+            if (num % 2 == 1)
+                num--;
+            else
+                num /= 2;
+            cnt++;
+        }
+        return cnt;
+    }
+}
 ```
 
 ### **...**
diff --git a/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README_EN.md b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README_EN.md
index af2a514685466..e828822776c9b 100644
--- a/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README_EN.md	
+++ b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/README_EN.md	
@@ -61,7 +61,19 @@ Step 4) 1 is odd; subtract 1 and obtain 0.
 ### **Java**
 
 ```java
-
+class Solution {
+    public int numberOfSteps(int num) {
+        int cnt = 0;
+        while (num != 0) {
+            if (num % 2 == 1)
+                num--;
+            else
+                num /= 2;
+            cnt++;
+        }
+        return cnt;
+    }
+}
 ```
 
 ### **...**
diff --git a/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/Solution.java b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/Solution.java
new file mode 100644
index 0000000000000..fd6ac2dfc9993
--- /dev/null
+++ b/solution/1300-1399/1342.Number of Steps to Reduce a Number to Zero/Solution.java	
@@ -0,0 +1,13 @@
+class Solution {
+    public int numberOfSteps(int num) {
+        int cnt = 0;
+        while (num != 0) {
+            if (num % 2 == 1)
+                num--;
+            else
+                num /= 2;
+            cnt++;
+        }
+        return cnt;
+    }
+}
\ No newline at end of file
diff --git a/solution/1600-1699/1678.Goal Parser Interpretation/README.md b/solution/1600-1699/1678.Goal Parser Interpretation/README.md
index f297c7e47fec3..9e1be1167bd55 100644
--- a/solution/1600-1699/1678.Goal Parser Interpretation/README.md	
+++ b/solution/1600-1699/1678.Goal Parser Interpretation/README.md	
@@ -64,7 +64,29 @@ G -&gt; G
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public String interpret(String command) {
+        StringBuilder sb = new StringBuilder();
+        int p = 0, q = 1;
+        for (; p < command.length(); p++, q++) {
+            char c = command.charAt(p);
+            if (c == 'G')
+                sb.append('G');
+            if (c == '(') {
+                if (command.charAt(q) == ')') {
+                    sb.append("o");
+                    p++;
+                    q++;
+                } else {
+                    sb.append("al");
+                    p += 2;
+                    q += 2;
+                }
+            }
+        }
+        return sb.toString();
+    }
+}
 ```
 
 ### **...**
diff --git a/solution/1600-1699/1678.Goal Parser Interpretation/README_EN.md b/solution/1600-1699/1678.Goal Parser Interpretation/README_EN.md
index 851e3617808e8..ccf493856e622 100644
--- a/solution/1600-1699/1678.Goal Parser Interpretation/README_EN.md	
+++ b/solution/1600-1699/1678.Goal Parser Interpretation/README_EN.md	
@@ -57,7 +57,29 @@ The final concatenated result is &quot;Goal&quot;.
 ### **Java**
 
 ```java
-
+class Solution {
+    public String interpret(String command) {
+        StringBuilder sb = new StringBuilder();
+        int p = 0, q = 1;
+        for (; p < command.length(); p++, q++) {
+            char c = command.charAt(p);
+            if (c == 'G')
+                sb.append('G');
+            if (c == '(') {
+                if (command.charAt(q) == ')') {
+                    sb.append("o");
+                    p++;
+                    q++;
+                } else {
+                    sb.append("al");
+                    p += 2;
+                    q += 2;
+                }
+            }
+        }
+        return sb.toString();
+    }
+}
 ```
 
 ### **...**
diff --git a/solution/1600-1699/1678.Goal Parser Interpretation/Solution.java b/solution/1600-1699/1678.Goal Parser Interpretation/Solution.java
new file mode 100644
index 0000000000000..b5b6e0817b2e3
--- /dev/null
+++ b/solution/1600-1699/1678.Goal Parser Interpretation/Solution.java	
@@ -0,0 +1,23 @@
+class Solution {
+    public String interpret(String command) {
+        StringBuilder sb = new StringBuilder();
+        int p = 0, q = 1;
+        for (; p < command.length(); p++, q++) {
+            char c = command.charAt(p);
+            if (c == 'G')
+                sb.append('G');
+            if (c == '(') {
+                if (command.charAt(q) == ')') {
+                    sb.append("o");
+                    p++;
+                    q++;
+                } else {
+                    sb.append("al");
+                    p += 2;
+                    q += 2;
+                }
+            }
+        }
+        return sb.toString();
+    }
+}
\ No newline at end of file