Related Questions

Which of the following declares an abstract method in an abstract Java class?
A public abstract method();
B public abstract void method();
C public void abstract Method();
D public void method() {}
E public abstract void method() {}
Atleast how many abstract methods must an abstract class contain?
A None
B One
C Two
D Five
The visibility of a property or method can be defined by prefixing the declaration with the keywords public, protected or private. Class members declared public can be accessed everywhere. Members declared protected can be accessed only within the class itself and by inherited classes. Members declared as private are not accessible.
A True
B False
Which of the following class definitions defines a legal abstract class?
A class A { abstract void unfinished() { } }
B class A { abstract void unfinished(); }
C abstract class A { abstract void unfinished(); }
D public class abstract A { abstract void unfinished(); }
The ratio of boys to girls in class A is 3 to 4 . The ratio of boys to girls in class B is 4 to 5 . If the two classes were combined, the ratio of boys to girls in class B is two less than the number of girls in class A. How many girls are in class A?
A 87
B 11
C 12
D 15
Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?
A 81
B 81.5
C 82
D 84.5
which of these keywords can be used in a subclass to call the constructor of superclass?
A Extent
B Extends
C Super
D This
Among the keywords below, which one is not a statement?
A debugger
B with
C if
D use strict
Suppose a class has public visibility. In this class we define a protected method. Which of the following statements is correct?
A This method is only accessible from inside the class itself and from inside all subclasses.
B In a class, you cannot declare methods with a lower visibility than the visibility of the class in which it is defined.
C From within protected methods you do not have access to public methods.
D This method is accessible from within the class itself and from within all classes defined in the same package as the class itself.
Which of the following is the correct order of keywords for SQL SELECT statements?
A SELECT, FROM, WHERE
B FROM, WHERE, SELECT
C WHERE, FROM,SELECT
D SELECT,WHERE,FROM

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