some @Override annotations

h2/src/main/org/h2/command/ddl/CreateView.java

@@ -9,7 +9,6 @@ import java.util.ArrayList;
 import org.h2.api.ErrorCode;
 import org.h2.command.CommandInterface;
 import org.h2.command.dml.Query;
-import org.h2.engine.Constants;
 import org.h2.engine.Database;
 import org.h2.engine.Session;
 import org.h2.expression.Parameter;

h2/src/main/org/h2/mvstore/db/MVPrimaryIndex.java

@@ -5,7 +5,6 @@
  */
 package org.h2.mvstore.db;
 
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Iterator;

h2/src/main/org/h2/table/Table.java

@@ -343,6 +343,7 @@ public abstract class Table extends SchemaObjectBase {
         return null;
     }
 
+    @Override
     public String getCreateSQLForCopy(Table table, String quotedName) {
         throw DbException.throwInternalError(toString());
     }

h2/src/test/org/h2/test/synth/TestHaltApp.java

@@ -9,7 +9,6 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
-
 import org.h2.test.utils.SelfDestructor;
 
 /**
@@ -38,6 +37,7 @@ public class TestHaltApp extends TestHalt {
         }
     }
 
+    @Override
     protected void execute(Statement stat, String sql) throws SQLException {
         traceOperation("execute: " + sql);
         super.execute(stat, sql);

h2/src/test/org/h2/util/TestColumnNamer.java

@@ -45,6 +45,7 @@ public class TestColumnNamer extends TestBase {
         new TestColumnNamer().test();
     }
 
+    @Override
     public void test() {
         ColumnNamer columnNamer = new ColumnNamer(null);
         columnNamer.getConfiguration().configure("MAX_IDENTIFIER_LENGTH = 30");