style: code cleanup and Java 5' features

pgjdbc/src/main/java/org/postgresql/Driver.java

@@ -417,10 +417,7 @@ private static Connection makeConnection(String url, Properties props) throws SQ
    * @see java.sql.Driver#acceptsURL
    */
   public boolean acceptsURL(String url) {
-    if (parseURL(url, null) == null) {
-      return false;
-    }
-    return true;
+    return parseURL(url, null) != null;
   }
 
   /**
@@ -567,9 +564,8 @@ public static Properties parseURL(String url, Properties defaults) {
 
     // parse the args part of the url
     String[] args = l_urlArgs.split("&");
-    for (int i = 0; i < args.length; ++i) {
-      String token = args[i];
-      if (token.length() == 0) {
+    for (String token : args) {
+      if (token.isEmpty()) {
         continue;
       }
       int l_pos = token.indexOf('=');

pgjdbc/src/main/java/org/postgresql/PGConnection.java

@@ -29,7 +29,7 @@ public interface PGConnection {
    * @throws SQLException if something wrong happens
    * @since 7.3
    */
-  public PGNotification[] getNotifications() throws SQLException;
+  PGNotification[] getNotifications() throws SQLException;
 
   /**
    * This returns the COPY API for the current connection.
@@ -38,7 +38,7 @@ public interface PGConnection {
    * @throws SQLException if something wrong happens
    * @since 8.4
    */
-  public CopyManager getCopyAPI() throws SQLException;
+  CopyManager getCopyAPI() throws SQLException;
 
   /**
    * This returns the LargeObject API for the current connection.
@@ -47,7 +47,7 @@ public interface PGConnection {
    * @throws SQLException if something wrong happens
    * @since 7.3
    */
-  public LargeObjectManager getLargeObjectAPI() throws SQLException;
+  LargeObjectManager getLargeObjectAPI() throws SQLException;
 
   /**
    * This returns the Fastpath API for the current connection.
@@ -56,7 +56,7 @@ public interface PGConnection {
    * @throws SQLException if something wrong happens
    * @since 7.3
    */
-  public Fastpath getFastpathAPI() throws SQLException;
+  Fastpath getFastpathAPI() throws SQLException;
 
   /**
    * This allows client code to add a handler for one of org.postgresql's more unique data types. It
@@ -69,7 +69,7 @@ public interface PGConnection {
    *             does not work correctly for registering classes that cannot be directly loaded by
    *             the JDBC driver's classloader.
    */
-  public void addDataType(String type, String className);
+  void addDataType(String type, String className);
 
   /**
    * This allows client code to add a handler for one of org.postgresql's more unique data types.
@@ -100,7 +100,7 @@ public interface PGConnection {
    * @see org.postgresql.util.PGobject
    * @since 8.0
    */
-  public void addDataType(String type, Class<? extends PGobject> klass) throws SQLException;
+  void addDataType(String type, Class<? extends PGobject> klass) throws SQLException;
 
   /**
    * Set the default statement reuse threshold before enabling server-side prepare. See
@@ -109,7 +109,7 @@ public interface PGConnection {
    * @param threshold the new threshold
    * @since build 302
    */
-  public void setPrepareThreshold(int threshold);
+  void setPrepareThreshold(int threshold);
 
   /**
    * Get the default server-side prepare reuse threshold for statements created from this
@@ -118,7 +118,7 @@ public interface PGConnection {
    * @return the current threshold
    * @since build 302
    */
-  public int getPrepareThreshold();
+  int getPrepareThreshold();
 
   /**
    * Set the default fetch size for statements created from this connection
@@ -127,7 +127,7 @@ public interface PGConnection {
    * @throws SQLException if specified negative <code>fetchSize</code> parameter
    * @see Statement#setFetchSize(int)
    */
-  public void setDefaultFetchSize(int fetchSize) throws SQLException;
+  void setDefaultFetchSize(int fetchSize) throws SQLException;
 
 
   /**
@@ -137,14 +137,14 @@ public interface PGConnection {
    * @see PGProperty#DEFAULT_ROW_FETCH_SIZE
    * @see Statement#getFetchSize()
    */
-  public int getDefaultFetchSize();
+  int getDefaultFetchSize();
 
   /**
    * Return the process ID (PID) of the backend server process handling this connection.
    *
    * @return PID of backend server process.
    */
-  public int getBackendPID();
+  int getBackendPID();
 
   /**
    * Return the given string suitably quoted to be used as an identifier in an SQL statement string.
@@ -155,7 +155,7 @@ public interface PGConnection {
    * @return the escaped identifier
    * @throws SQLException if something goes wrong
    */
-  public String escapeIdentifier(String identifier) throws SQLException;
+  String escapeIdentifier(String identifier) throws SQLException;
 
   /**
    * Return the given string suitably quoted to be used as a string literal in an SQL statement
@@ -166,5 +166,5 @@ public interface PGConnection {
    * @return the quoted literal
    * @throws SQLException if something goes wrong
    */
-  public String escapeLiteral(String literal) throws SQLException;
+  String escapeLiteral(String literal) throws SQLException;
 }

pgjdbc/src/main/java/org/postgresql/PGNotification.java

@@ -18,15 +18,15 @@ public interface PGNotification {
    * @return name of this notification
    * @since 7.3
    */
-  public String getName();
+  String getName();
 
   /**
    * Returns the process id of the backend process making this notification
    *
    * @return process id of the backend process making this notification
    * @since 7.3
    */
-  public int getPID();
+  int getPID();
 
   /**
    * Returns additional information from the notifying process. This feature has only been
@@ -36,5 +36,5 @@ public interface PGNotification {
    * @return additional information from the notifying process
    * @since 8.0
    */
-  public String getParameter();
+  String getParameter();
 }

pgjdbc/src/main/java/org/postgresql/PGRefCursorResultSet.java

@@ -22,5 +22,5 @@ public interface PGRefCursorResultSet {
    * @deprecated As of 8.0, replaced with calling getString() on the ResultSet that this ResultSet
    *             was obtained from.
    */
-  public String getRefCursor();
+  String getRefCursor();
 }

pgjdbc/src/main/java/org/postgresql/PGResultSetMetaData.java

@@ -22,7 +22,7 @@ public interface PGResultSetMetaData {
    * @throws SQLException if something wrong happens
    * @since 8.0
    */
-  public String getBaseColumnName(int column) throws SQLException;
+  String getBaseColumnName(int column) throws SQLException;
 
   /**
    * Returns the underlying table name of query result, or "" if it is unable to be determined.
@@ -32,7 +32,7 @@ public interface PGResultSetMetaData {
    * @throws SQLException if something wrong happens
    * @since 8.0
    */
-  public String getBaseTableName(int column) throws SQLException;
+  String getBaseTableName(int column) throws SQLException;
 
   /**
    * Returns the underlying schema name of query result, or "" if it is unable to be determined.
@@ -42,7 +42,7 @@ public interface PGResultSetMetaData {
    * @throws SQLException if something wrong happens
    * @since 8.0
    */
-  public String getBaseSchemaName(int column) throws SQLException;
+  String getBaseSchemaName(int column) throws SQLException;
 
   /**
    * Is a column Text or Binary?
@@ -54,5 +54,5 @@ public interface PGResultSetMetaData {
    * @see Field#TEXT_FORMAT
    * @since 9.4
    */
-  public int getFormat(int column) throws SQLException;
+  int getFormat(int column) throws SQLException;
 }

pgjdbc/src/main/java/org/postgresql/PGStatement.java

@@ -21,10 +21,10 @@ public interface PGStatement {
   // The follow values are the nearest MAX/MIN values with hour,
   // minute, second, millisecond set to 0 - this is used for
   // -infinity / infinity representation in Java
-  public static final long DATE_POSITIVE_INFINITY = 9223372036825200000L;
-  public static final long DATE_NEGATIVE_INFINITY = -9223372036832400000L;
-  public static final long DATE_POSITIVE_SMALLER_INFINITY = 185543533774800000L;
-  public static final long DATE_NEGATIVE_SMALLER_INFINITY = -185543533774800000L;
+  long DATE_POSITIVE_INFINITY = 9223372036825200000L;
+  long DATE_NEGATIVE_INFINITY = -9223372036832400000L;
+  long DATE_POSITIVE_SMALLER_INFINITY = 185543533774800000L;
+  long DATE_NEGATIVE_SMALLER_INFINITY = -185543533774800000L;
 
 
   /**
@@ -34,7 +34,7 @@ public interface PGStatement {
    * @throws SQLException if something goes wrong
    * @since 7.3
    */
-  public long getLastOID() throws SQLException;
+  long getLastOID() throws SQLException;
 
   /**
    * Turn on the use of prepared statements in the server (server side prepared statements are
@@ -46,7 +46,7 @@ public interface PGStatement {
    * @since 7.3
    * @deprecated As of build 302, replaced by {@link #setPrepareThreshold(int)}
    */
-  public void setUseServerPrepare(boolean flag) throws SQLException;
+  void setUseServerPrepare(boolean flag) throws SQLException;
 
   /**
    * Checks if this statement will be executed as a server-prepared statement. A return value of
@@ -55,7 +55,7 @@ public interface PGStatement {
    *
    * @return true if the next reuse of this statement will use a server-prepared statement
    */
-  public boolean isUseServerPrepare();
+  boolean isUseServerPrepare();
 
   /**
    * Sets the reuse threshold for using server-prepared statements.
@@ -72,7 +72,7 @@ public interface PGStatement {
    * @throws SQLException if an exception occurs while changing the threshold
    * @since build 302
    */
-  public void setPrepareThreshold(int threshold) throws SQLException;
+  void setPrepareThreshold(int threshold) throws SQLException;
 
   /**
    * Gets the server-side prepare reuse threshold in use for this statement.
@@ -81,5 +81,5 @@ public interface PGStatement {
    * @see #setPrepareThreshold(int)
    * @since build 302
    */
-  public int getPrepareThreshold();
+  int getPrepareThreshold();
 }

pgjdbc/src/main/java/org/postgresql/copy/CopyIn.java

@@ -41,5 +41,5 @@ public interface CopyIn extends CopyOperation {
    * @return number of updated rows for server 8.2 or newer (see getHandledRowCount())
    * @throws SQLException if the operation fails.
    */
-  public long endCopy() throws SQLException;
+  long endCopy() throws SQLException;
 }

pgjdbc/src/main/java/org/postgresql/copy/CopyOperation.java

@@ -50,5 +50,5 @@ public interface CopyOperation {
    *
    * @return number of handled rows or -1
    */
-  public long getHandledRowCount();
+  long getHandledRowCount();
 }