[fix](demo) scala.Function1 used in java about compiling error:apply$…

…mcVJ$sp(long)

Fix MyForeachPartitionFunction.java:xxx:xxx
java: org.apache.doris.demo.spark.demo.hdfs.MyForeachPartitionFunction is not abstract and does not override abstract method apply$mcVJ$sp(long) in scala.Function1

samples/doris-demo/spark-demo/src/main/java/org/apache/doris/demo/spark/demo/hdfs/MyForeachPartitionFunction.java

@@ -22,7 +22,7 @@
 import lombok.extern.slf4j.Slf4j;
 import org.apache.doris.demo.spark.util.DorisStreamLoad;
 import org.apache.doris.demo.spark.vo.TestVo;
-import scala.Function1;
+import scala.runtime.AbstractFunction1;
 import scala.collection.AbstractIterator;
 
 import java.io.Serializable;
@@ -32,7 +32,7 @@
 
 
 @Slf4j
-public class MyForeachPartitionFunction implements Function1, Serializable {
+public class MyForeachPartitionFunction extends AbstractFunction1 implements Serializable {
     DorisStreamLoad dorisStreamLoad;
 
     public MyForeachPartitionFunction(Map<String, Object> parameters) {
@@ -68,4 +68,4 @@ public Function1 andThen(Function1 g) {
     public Function1 compose(Function1 g) {
         return null;
     }
-}
+}