Fix JDK8 compatibility issue

zhicwu · zhicwu · commit 1b0714ad6fb0 · 2021-11-30T00:09:31.000+08:00
diff --git a/clickhouse-jdbc/src/test/java/ru/yandex/clickhouse/util/UtilsTest.java b/clickhouse-jdbc/src/test/java/ru/yandex/clickhouse/util/UtilsTest.java
@@ -39,7 +39,7 @@ public void testVarInt() {
             buffer = ByteBuffer.allocate(8);
             Utils.writeVarInt(i, buffer);
             Utils.writeVarInt(0 - i, buffer);
-            buffer = (ByteBuffer) ((Buffer) buffer.flip());
+            buffer = (ByteBuffer) ((Buffer) buffer).flip();
             assertEquals(Utils.readVarInt(buffer), i);
             assertEquals(Utils.readVarInt(buffer), 0 - i);
         }

Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,7 @@ public void testVarInt() {`
`39`	`39`	`buffer = ByteBuffer.allocate(8);`
`40`	`40`	`Utils.writeVarInt(i, buffer);`
`41`	`41`	`Utils.writeVarInt(0 - i, buffer);`
`42`		`- buffer = (ByteBuffer) ((Buffer) buffer.flip());`
	`42`	`+ buffer = (ByteBuffer) ((Buffer) buffer).flip();`
`43`	`43`	`assertEquals(Utils.readVarInt(buffer), i);`
`44`	`44`	`assertEquals(Utils.readVarInt(buffer), 0 - i);`
`45`	`45`	`}`