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Focused questions for skill assessment

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Premium questions with correct answers

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Free Sample Questions for Oracle Sun Certified Java Programmer

What occurs when a class is marked as 'final'?

HiThereSally.java because the file name must exactly match the public class name (excepting the .java extension).

Only one public class

No other class can extend it.

Public and Abstract

Answer:
No other class can extend it.

What is the purpose of making a field 'transient'?

EnumName.VALUE;

32 bits.

It prevents the field from being serialized as the JVM will skip it.

It indicates that a method can only be accessed by one thread at a time.

Answer:
It prevents the field from being serialized as the JVM will skip it.