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1z0-819 Exam Dumps : Java SE 11 Developer

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Java SE 11 Developer Questions and Answers

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Question 1

Given:

Which would cause s to be AQCD?

Options:

A.

s.replace(s.indexOf(“A”), s.indexOf(“C”), “Q”);

B.

s.replace(s.indexOf(“B”), s.indexOf(“C”), “Q”);

C.

s.replace(s.indexOf(“B”), s.indexOf(“B”), “Q”);

D.

s.replace(s.indexOf(“A”), s.indexOf(“B”), “Q”);

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Question 2

Your organization makes mlib.jar available to your cloud customers. While working on a code cleanup project for mlib.jar, you see this method by customers:

What security measures should be added to this method so that it meets the requirements for a customer accessible method?

Options:

A.

B.

Create a method that validates the hostName and portNumber parameters before opening the socket.

C.

Make enableService private.

D.

Enclose the call to new Socket In an AccessController.doPrivileged block.

Question 3

Which command line runs the main class com.acme.Main from the module com.example?

Options:

A.

java --module-path mods com.example/com.acme.Main

B.

java –classpath com.example.jar com.acme.Main

C.

java --module-path mods -m com.example/com.acme.Main

D.

java -classpath com.example.jar –m com.example/com.acme.Main

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