convert instrument jdbc test from groovy to java

instrumentation/jdbc/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/jdbc/test/DbCallingConnection.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.javaagent.instrumentation.jdbc.test;
+
+import io.opentelemetry.instrumentation.jdbc.TestConnection;
+import java.sql.DatabaseMetaData;
+import java.sql.SQLException;
+
+class DbCallingConnection extends TestConnection {
+  final boolean usePreparedStatement;
+
+  DbCallingConnection(boolean usePreparedStatement) {
+    super(false);
+    this.usePreparedStatement = usePreparedStatement;
+  }
+
+  @Override
+  public DatabaseMetaData getMetaData() throws SQLException {
+    // simulate retrieving DB metadata from the DB itself
+    if (usePreparedStatement) {
+      prepareStatement("SELECT * from DB_METADATA").executeQuery();
+    } else {
+      createStatement().executeQuery("SELECT * from DB_METADATA");
+    }
+    return super.getMetaData();
+  }
+}