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Last active Nov 1, 2017
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import javax.annotation.Nonnull;
import javax.annotation.meta.When;
public class Message {
private final String greetingMessage = "Hello ";
@Nonnull(when = When.ALWAYS) //When.ALWAYS is default option and makes the annotated type as non-nullable
public String getEchoMessage() {
return greetingMessage;
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