Flag this Question Question 14 pts (TCOs 1–6) The component that can be used to

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Question 14 pts

(TCOs 1–6) The component that can be used to display query results from a database in a grid of rows and columns is

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Question 24 pts

(TCOs 1–6) What is the output of the code below?
                   
         double num = 56.4321;
         System.out.printf("%.2f", 56.4321);

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Question 34 pts

(TCOs 1–6) The signature of a method consists of

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Question 44 pts

(TCOs 1–6) Assume int[ ] t = {1, 2, 3, 4}. What is t.length?

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Question 54 pts

(TCOs 1, 2, and 6) A key part of enabling the JVM to locate and call method main to begin the app’s execution is the _____ keyword, which indicates that main can be called without first creating an object of the class in which the method is declared.

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Question 64 pts

(TCOs 1–6) Invoking _____ returns the first element in an ArrayList x.

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Question 74 pts

(TCOs 1, 4, and 6) Consider a form with a ButtonGroup with three radio buttons, and two check boxes. What is the total number of radio buttons and check boxes that can be selected at any time?

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Question 84 pts

(TCOs 1–6) Analyze the following code.
public class Test {
      int x;

      public Test(String t) {
            System.out.println("Test");
      }
      public static void main(String[ ] args) {
            Test test = null;
            System.out.println(test.x);
      }
}

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Question 94 pts

(TCOs 1–6) Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become [Beijing, Chicago, Singapore]?

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Question 104 pts

(TCOs 1, 5, and 6) Which statement sets up a tokens object that will use the % as a field delimiter?

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Question 114 pts

(TCOs 1–6) The title of a JFrame can be set by using which statement in the constructor of your class that extends JFrame?

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Question 124 pts

(TCOs 1, 5, and 6) Which type of exception occurs if the file cannot be created by a FileWriter object?

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Question 134 pts

(TCOs 1–6) What layout manager should you use so that every component occupies the same size in the container?

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Question 144 pts

(TCOs 1–6) The _____ method of an event object returns the object that caused the event.

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Question 154 pts

(TCOs 1–6) The datatype returned by the JOptionPane.showInputDialog method is

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Question 164 pts

(TCOs 1, 4, and 6) Menus are attached to windows by calling the _____ method.

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Question 174 pts

(TCOs 1–6) Set methods are also commonly called _____ methods, and get methods are also commonly called _____ methods.

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Question 184 pts

(TCOs 1, 4, and 6) The method used to add panels to a JTabbedPane is

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Question 194 pts

(TCOs 1–6) A programmer-defined constructor that has no arguments is called a(n)

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Question 204 pts

(TCOs 1–6) A method that is associated with an individual object is called

Explanation / Answer

Hi,

Below are the answers-

Ans 14 - JTable
Ans 24 - 56.43
Ans 34 - method name and parameter list.
Ans 44 - 4
Ans 54 - public
Ans 64 - x.get(0)
Ans 74 - 3 ( There can be only one radiobutton that can be selected from the group)
Ans 84 - The program has a runtime NullPointerException because test is null while executing test.x.
Ans 94 - x.add(1, "Chicago")
Ans 104 - tokens = new StringTokenizer(inputString, "%");
Ans 114 - JFrame.super(“Title here”);
Ans 124 - FileIOException
Ans 134 - a GridLayout
Ans 144 - getEventObject()
Ans 154 - String.
Ans 164 - setJMenuBar
Ans 174 - mutator, accessor.
Ans 184 - addPanel.
Ans 194 - no-argument constructor.
Ans 204 - an instance method.

Regards,

Vinay Singh

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