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Message:

Interfaces and Implements

Posted by Eric Hardesty on July 13, 2000 at 1:18 PM

I tried to implement an interface that I was given, but I continue to get the same error on the compile. I'm somewhat new to Java, but not programming. Can anybody explain what I need to do to fix this?

Interfaces:
package test;
public interface Record extends java.lang.Cloneable {
public
Object clone() throws CloneNotSupportedException;
}

package test;
public interface MappedRecord extends Record, java.util.Map {
}

Implementation:
package works;
public class Record implements test.Record {
public
Object clone() throws CloneNotSupportedException
{
Object o = null;
try {
o = super.clone();
}
catch (CloneNotSupportedException e) {
throw e;
}
return o;
}
}

package works;
public class MappedRecord implements test.MappedRecord {
}

I have tried including different methods into this class, but nothing works. Here is the message that the compile gives me:

D:\jclasses\works>javac -classpath d:\jclasses -d d:\jclasses MappedRecord.java
MappedRecord.java:3: The method java.lang.Object clone() declared in class java.lang.Object cannot override the method of the same signature declared in interface test.Record. The access modifier is made more restrictive.public class MappedRecord implements test.MappedRecord {
^
1 error

Thanks for any help.
Eric

• interfaces and implements Joan Friedman July 13, 2000 at 4:39 PM (1)
  • Interfaces and Implements Eric Hardesty July 13, 2000 at 4:43 PM (0)