What is multithreading and why is it advantageous?
What will be an ideal response?
With multithreading (multiple threads executed in parallel), a program splits into two or more tasks that run simultaneously. A common use of threads is to have one pay attention to the graphical user interface while others do a long calculation in the background. As a result, the application more readily responds to a user's interaction.
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If vertices u and v are in different trees of the depth-first forest, then u and v must not be connected.
a. True b. False
(Bank Account Information Application) Create an application that allows a user to input a deposit amount (Fig. 4.15). Each time the user clicks the Enter JButton, the applica- tion adds the deposit amount entered by the user in the Deposit amount: JTextField to the balance that is currently displayed in the Balance: JTextField, then displays the new result in the Balance: JTextField. [Note: This application displays Sue Purple as a default client name and 12345 as a default account number.]
a) Copying the template to your working directory. Copy the C:Examples Tutorial04ExercisesAccountInformation directory to your C:SimplyJava directory.
b) Opening the Command Prompt window and changing directories. Open the Com- mand Prompt window by selecting Start > Programs > Accessories > Command Prompt. Change to your working directory by typing cd C:SimplyJava AccountInformation.
c) Compiling the template application. Compile your application by typing javac
AccountInformation.java.
d) Running the template application. Run the Bank Account Information template application by typing java AccountInformation. Type 100 in the Deposit amount: JTextField. When you press the Enter JButton, notice that the deposit amount is not added to the balance because you have not added code to the Enter JButton’s event handler yet.
e) Opening the template file. Open the AccountInformation.java file in your text editor.
f) Inserting code in the event handler. I
In Access, a ________ value is the data that is automatically entered in a field
Fill in the blank(s) with correct word
In the Add Connection dialog box, if the wrong data source displays, click the ____ button and then select the correct one.
A. New B. Correct C. Change D. Restore Source