Q. Which two cause a compiler error?

1. float[ ] f = new float(3);
2. float f2[ ] = new float[ ];
3. float[ ]f1 = new float[3];
4. float f3[ ] = new float[3];
5. float f5[ ] = {1.0f, 2.0f, 2.0f};

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Q. Given a method in a protected class, what access modifier do you use to restrict access to that method to only the other members of the same class?

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Q. Which is a valid declaration within an interface?

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Q. You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?

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Q. Which three form part of correct array declarations?

1. public int a [ ]
2. static int [ ] a
3. public [ ] int a
4. private int a [3]
5. private int [3] a [ ]
6. public final int [ ] a

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Q. public class Test { }

What is the prototype of the default constructor?

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Q. What is the most restrictive access modifier that will allow members of one class to have access to members of another class in the same package?

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Q. Which of the following is/are legal method declarations?

1. protected abstract void m1();
2. static final void m1(){}
3. synchronized public final void m1() {}
4. private native void m1();

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Q. Which cause a compiler error?

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Q. Which three are valid method signatures in an interface?

1. private int getArea();
2. public float getVol(float x);
3. public void main(String [] args);
4. public static void main(String [] args);
5. boolean setFlag(Boolean [] test);

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Q. You want a class to have access to members of another class in the same package. Which is the most restrictive access that accomplishes this objective?

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Q. Which one creates an instance of an array?

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Q. Which two of the following are legal declarations for nonnested classes and interfaces?

1. final abstract class Test {}
2. public static interface Test {}
3. final public class Test {}
4. protected abstract class Test {}
5. protected interface Test {}
6. abstract public class Test {}

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Q. Which of the following class level (nonlocal) variable declarations will not compile?

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Q. Which three statements are true?

1. The default constructor initialises method variables.
2. The default constructor has the same access as its class.
3. The default constructor invokes the no-arg constructor of the superclass.
4. If a class lacks a no-arg constructor, the compiler always creates a default constructor.
5. The compiler creates a default constructor only when there are no other constructors for the class.

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Q. What is the numerical range of char?

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Q. Which of the following are Java reserved words?

1. run
2. import
3. default
4. implement

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Q. Suppose that you would like to create an instance of a new Map that has an iteration order that is the same as the iteration order of an existing instance of a Map. Which concrete implementation of the Map interface should be used for the new instance?

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Q. Which class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

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Q. Which collection class allows you to grow or shrink its size and provides indexed access to its elements, but whose methods are not synchronized?

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