Polish DevToolsDataSourceAutoConfiguration

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.java

@@ -19,8 +19,6 @@ package org.springframework.boot.devtools.autoconfigure;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.sql.Statement;
-import java.util.Arrays;
-import java.util.HashSet;
 import java.util.Properties;
 import java.util.Set;
 
@@ -108,8 +106,11 @@ public class DevToolsDataSourceAutoConfiguration {
 
 		private enum InMemoryDatabase {
 
-			DERBY(null, new HashSet<>(Arrays.asList("org.apache.derby.jdbc.EmbeddedDriver")), (dataSource) -> {
-				String url = dataSource.getConnection().getMetaData().getURL();
+			DERBY(null, Set.of("org.apache.derby.jdbc.EmbeddedDriver"), (dataSource) -> {
+				String url;
+				try (Connection connection = dataSource.getConnection()) {
+					url = connection.getMetaData().getURL();
+				}
 				try {
 					new EmbeddedDriver().connect(url + ";drop=true", new Properties()).close();
 				}
@@ -120,10 +121,10 @@ public class DevToolsDataSourceAutoConfiguration {
 				}
 			}),
 
-			H2("jdbc:h2:mem:", new HashSet<>(Arrays.asList("org.h2.Driver", "org.h2.jdbcx.JdbcDataSource"))),
+			H2("jdbc:h2:mem:", Set.of("org.h2.Driver", "org.h2.jdbcx.JdbcDataSource")),
 
-			HSQLDB("jdbc:hsqldb:mem:", new HashSet<>(Arrays.asList("org.hsqldb.jdbcDriver",
-					"org.hsqldb.jdbc.JDBCDriver", "org.hsqldb.jdbc.pool.JDBCXADataSource")));
+			HSQLDB("jdbc:hsqldb:mem:", Set.of("org.hsqldb.jdbcDriver", "org.hsqldb.jdbc.JDBCDriver",
+					"org.hsqldb.jdbc.pool.JDBCXADataSource"));
 
 			private final String urlPrefix;