Java call the Scala' Object elements Error [duplicate]

Question

My Code as below:

 public static boolean createTopic(String topicname, String zkUrl, int sessionTimeout, int connectTimeout, int partitions, int replicationFactor){
    boolean result = false;
    ZkUtils zkUtil = ZkUtils.apply(zkUrl, connectTimeout, sessionTimeout, JaasUtils.isZkSecurityEnabled());
    RackAwareMode rackAwareMode = RackAwareMode.Enforced;

    if(AdminUtils.topicExists(zkUtil, topicname)){
        return true;
    }
    else{
        AdminUtils.createTopic(zkUtil,topicname,partitions,replicationFactor, null, null);

    }
    return result;
}

and the Scala code as below

object RackAwareMode {
   case object Disabled extends RackAwareMode
   case object Enforced extends RackAwareMode
   case object Safe extends RackAwareMode
}
sealed trait RackAwareMode

The Error arised at the line below: RackAwareMode rackAwareMode = RackAwareMode.Enforced;

Any ideas for me?

The Error is "expression expected"

zhangkuantian
– zhangkuantian

2016-09-21 09:56:33 +00:00
Commented Sep 21, 2016 at 9:56 — zhangkuantian
– zhangkuantian, Commented Sep 21, 2016 at 9:56
Add edits to your question not via comments.

progyammer
– progyammer

2016-09-21 10:01:35 +00:00
Commented Sep 21, 2016 at 10:01 — progyammer
– progyammer, Commented Sep 21, 2016 at 10:01

dveim · Accepted Answer · 2016-09-21 10:08:50Z

0

Use RackAwareMode.Enforced$.MODULE$instead. The reason is how Scala generate inner classes.

answered Sep 21, 2016 at 10:08

dveim

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1 Comment

zhangkuantian Over a year ago

it worked ! thank you!

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