Java Foundation 6

Which statement about access modifiers is correct?

• An instance variable can be declared with the static modifier.

• A local variable can be declared with the final modifier.

• An abstract method can be declared with the private modifier.

• An inner class cannot be declared with the public modifier.

• An interface can be declared with the protected modifier.

• java /code/a/Test.java

• javac –d /code /code/a/Tes

• java /code/a/Test.java /code/b/Best.java

• java –cp /code a.Test

• javac –d /code /code/a/Test.java /code/b/Best.java

Which interface in the java.util.function package can return a primitive type?

• ToDoubleFunction

• Supplier

• BiFunction

• LongConsumer

• I am an object array

• The compilation fails due to an error in line 1.

• I am an array

• I am an object

• 42

• 17

• The compilation fails due to an error in line 4.

• The compilation fails due to an error in line 3.

• The compilation fails due to an error in line 2.

• float z = (float)(Math.round((float)x/y*100)/100)

• float z = Math.round((int)(x/y),2);

• float z = Math.round((float)x/y,2);

• float z = Math.round((float)x/y*100)/(float)100;

• 0). one

• It creates an infinite loop printing:0). one1). two1). two...

• 0). one1). two2). three

• The compilation fails.

• A java.lang.NullPointerException is thrown.

• The compilation fail

• 1.99,2.99,0

• 1.99,2.99,0.0

• 1.99,2.99

• Replace line n1 with import fruits.Apple.getApple();

• Replace line n1 with import fruits.Apple;

• Replace line n1 with import fruits;

• Replace line n2 with fruits.Apple apple = new Apple ();

• Replace line n2 with fruits.Apple apple = new fruits.Apple ();

What does import java.io* mean?

• Only the io class is imported.

• All classes in the io package are imported.

• All classes whose names start with io are imported.

• All classes in the io package and the subpackages of io packages, if any, are imported.