Which two are functional interfaces? (Choose two.)

• A.Option D
• B.Option C
• C.Option E
• D.Option B
• E.Option A

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Which two are successful examples of autoboxing? (Choose two.)

• A.Integer e = 5;
• B.Float f = 6.0;
• C.String a = "A";
• D.Long c = 23L;
• E.Double d = 4;
• F.Float g = Float.valueOf(null);

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Given:

Which expression when added at line 1 will produce the output of 1.17?

• A.float z = (float)(Math.round((float)x/y*100)/100);
• B.float z = Math.round((int)(x/y),2);
• C.float z = Math.round((float)x/y,2);
• D.float z = Math.round((float)x/y*100)/(float)100;

Correct Answer: D

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Which describes a characteristic of setting up the Java development environment?

• A.You set up the Java development environment for a specific operating system when you install the JDK.
• B.Setting up the Java development environment requires that you also install the JRE.
• C.Setting up the Java development environment occurs when you install an IDE before the JDK.
• D.The Java development environment is set up for all operating systems by default.

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Given:

What is the result?

• A.NullPointerException is thrown at line 4.
• B.NullPointerException is thrown at line 10.
• C.A compilation error occurs.
• D.Hello

Correct Answer: D

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