fix some comments

1. use symlink instead of symbolic
2. remove a redundent chinese comment.

Author: qixu001

src/main/java/com/aliyun/oss/OSS.java

@@ -1761,9 +1761,9 @@ public String generateRtmpUri(GenerateRtmpUriRequest generatePushflowUrlRequest)
             throws OSSException, ClientException;
 
     /**
-	 * Creates a symbolic link to a target file under the bucket---this is not supported for archive class bucket.
+	 * Creates a symlink link to a target file under the bucket---this is not supported for archive class bucket.
      * @param bucketName Bucket name.
-     * @param symlink symbolic name.
+     * @param symlink symlink name.
      * @param target target file key.
      * @throws OSSException OSS Server side exception.
      * @throws ClientException OSS Client side exception.
@@ -1772,28 +1772,28 @@ public void createSymlink(String bucketName, String symlink, String target)
             throws OSSException, ClientException;
     /**
      * Creates a symbol link to a target file under the bucket---this is not supported for archive class bucket.
-     * @param createSymlinkRequest A {@link CreateSymlinkRequest} instance that specifies the bucket name, symbolic name.
+     * @param createSymlinkRequest A {@link CreateSymlinkRequest} instance that specifies the bucket name, symlink name.
      * @throws OSSException OSS Server side exception.
      * @throws ClientException OSS Client side exception.
      */
     public void createSymlink(CreateSymlinkRequest createSymlinkRequest)
             throws OSSException, ClientException;
 
     /**
-     * Gets the symbolic information for the given symbolic name.
+     * Gets the symlink information for the given symlink name.
      * @param bucketName Bucket name.
-     * @param symlink The symbolic name.
-     * @return The symbolic information, including the target file name and its metadata.
+     * @param symlink The symlink name.
+     * @return The symlink information, including the target file name and its metadata.
      * @throws OSSException OSS Server side exception.
      * @throws ClientException OSS Client side exception.
      */
     public OSSSymlink getSymlink(String bucketName, String symlink)
             throws OSSException, ClientException;
 
     /**
-     * Gets the symbolic information for the given symbolic name.
-     * @param genericRequest A {@link GenericRequest} instance which specifies the bucket name and symbolic name.
-     * @return The symbolic information, including the target file name and its metadata.
+     * Gets the symlink information for the given symlink name.
+     * @param genericRequest A {@link GenericRequest} instance which specifies the bucket name and symlink name.
+     * @return The symlink information, including the target file name and its metadata.
      * @throws OSSException OSS Server side exception.
      * @throws ClientException OSS Client side exception.
      */

src/main/java/com/aliyun/oss/OSSErrorCode.java

@@ -240,7 +240,7 @@ public interface OSSErrorCode {
     static final String NO_SUCH_LIVE_CHANNEL = "NoSuchLiveChannel";
 
     /**
-     * Symbolic target file does not exist.
+     * symlink target file does not exist.
      */
     static final String NO_SUCH_SYM_LINK_TARGET = "SymlinkTargetNotExist";
 

src/main/java/com/aliyun/oss/internal/ResponseParsers.java

@@ -1306,7 +1306,7 @@ public static SimplifiedObjectMeta parseSimplifiedObjectMeta(Map<String, String>
     }
 
     /**
-     * Unmarshall symbolic link from response headers.
+     * Unmarshall symlink link from response headers.
      */
     public static OSSSymlink parseSymbolicLink(ResponseMessage response) 
             throws ResponseParseException {

src/main/java/com/aliyun/oss/model/CreateSymlinkRequest.java

@@ -20,7 +20,7 @@
 package com.aliyun.oss.model;
 
 /**
- * The request class that is used to create symbolic on an object.
+ * The request class that is used to create symlink on an object.
  * 
  */
 public class CreateSymlinkRequest extends GenericRequest {
@@ -40,32 +40,32 @@ public void setSymlink(String symlink) {
     }
 
     /**
-     * Sets the target file of the symbolic.
+     * Sets the target file of the symlink.
      * @return Target file.
      */
     public String getTarget() {
         return this.target;
     }
 
     /**
-     * Gets the target file of the symbolic.
+     * Gets the target file of the symlink.
      * @param target Target file.
      */
     public void setTarget(String target) {
         this.target = target;
     }
 
     /**
-     * Gets the symbolic file's metadata.
-     * @return Symbolic file's metadata.
+     * Gets the symlink file's metadata.
+     * @return symlink file's metadata.
      */
     public ObjectMetadata getMetadata() {
         return metadata;
     }
 
     /**
-     * Sets the symbolic file's metadata.
-     * @param metadata Symbolic file's metadata.
+     * Sets the symlink file's metadata.
+     * @param metadata symlink file's metadata.
      */
     public void setMetadata(ObjectMetadata metadata) {
         this.metadata = metadata;
@@ -74,6 +74,6 @@ public void setMetadata(ObjectMetadata metadata) {
     // Target file.
     private String target;
 
-    // Symbolic file's metadata.
+    // symlink file's metadata.
     private ObjectMetadata metadata;
 }

src/main/java/com/aliyun/oss/model/GeneratePresignedUrlRequest.java

@@ -216,7 +216,6 @@ public ResponseHeaderOverrides getResponseHeaders() {
 
     /**
      * <p>
-     * 获取用户自定义的元数据。
      * Gets user's customized metadata.
      * </p>
      * <p>

src/main/java/com/aliyun/oss/model/OSSSymlink.java

@@ -20,7 +20,7 @@
 package com.aliyun.oss.model;
 
 /**
- * The entity class representing a OSS symbolic file.
+ * The entity class representing a OSS symlink file.
  * 
  */
 public class OSSSymlink {
@@ -47,16 +47,16 @@ public void setTarget(String target) {
     }
 
     /**
-     * Gets the metadata of the symbolic file
-     * @return The metadata of the symbolic file.
+     * Gets the metadata of the symlink file
+     * @return The metadata of the symlink file.
      */
     public ObjectMetadata getMetadata() {
         return metadata;
     }
 
     /**
-     * Sets the metadata of the symbolic file.
-     * @param metadata The metadata of the symbolic file.
+     * Sets the metadata of the symlink file.
+     * @param metadata The metadata of the symlink file.
      */
     public void setMetadata(ObjectMetadata metadata) {
         this.metadata = metadata;
@@ -68,13 +68,13 @@ public String toString() {
             + ", target=" + getTarget() + "]";
     }
 
-    // Symbolic file key
+    // symlink file key
     private String symlink;
 
     // The original file's key
     private String target;
 
-    // The symbolic file's metadata.
+    // The symlink file's metadata.
     private ObjectMetadata metadata;
 
 }

src/test/java/com/aliyun/oss/integrationtests/SymlinkTest.java

@@ -36,7 +36,7 @@
 import com.aliyun.oss.model.ObjectMetadata;
 
 /**
- * Test Symbolic Link 
+ * Test symlink Link
  */
 public class SymlinkTest extends TestBase {