Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A.All three readers are still open.
• B.Only reader1 has been closed.
• C.The compilation fails.
• D.All three readers have been closed.

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Given:
/code/a/Test.java
containing:

and
/code/b/Best.java
containing:
package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

• A.javac -d /code /code/a/Test.java
• B.javac -d /code /code/a/Test.java /code/b/Best.java
• C.java /code/a/Test.java /code/b/Best.java
• D.java -cp /code a.Test
• E.java /code/a/Test.java
• F.javac -d /code /code/a/Test

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Which describes an aspect of Java that contributes to high performance?

• A.Java monitors and optimizes code that is frequently executed.
• B.Java prioritizes garbage collection.
• C.Java automatically parallelizes code execution.
• D.Java has a library of built-in functions that can be used to enable pipeline burst execution.

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Given:

Which two statements are valid to be written in this interface? (Choose two.)

• A.public int x;
• B.public String methodD();
• C.final void methodE();
• D.public void methodF(){System.out.println("F");}
• E.private abstract void methodC();
• F.final void methodG(){System.out.println("G");}
• G.public abstract void methodB();

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Given:
var data = new ArrayList<>();
data.add("Peter");
data.add(30);
data.add("Market Road");
data.set(1, 25);
data.remove(2);
data.set(3, 1000L);
System.out.print(data);
What is the output?

• A.[Market Road, 1000]
• B.[Peter, 30, Market Road]
• C.[Peter, 25, null, 1000]
• D.An exception is thrown at run time.

Correct Answer: D

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