When you write a Java program that uses a window interface w

When you write a Java program that uses a window interface, what will happen if the statement System exit(0); Is omitted? Write a Java statement that displays the decimal number 189.234870 on the output window with the following settings using printf method: a. display 3 fraction digits b. leave 3 white space ahead of the number Identify class name, method name and argument(s) in the following statement: String appleString = JOptionPane.showlnputDialog(\"Enter number of apples.\"); Class Name: Method Name: Argument: What does the following Java statement display on the output window? System-Out.print(\'\\\"\\tTest\\\\\\\\\ It\\\"\"\"\"): What class is needed for each of the following cases? a. drawing b. create a GUI application c. creating a Java applet d. create an I/O window \"

Solution

Question 21.
   System.exit(0); -> it exits the flow of execution when control executes this statement

Question 22. System.out.printf(\" %.3f\",189.234870);
Question 23.
   String appleString=JOptionPane.showInputDialog(\"Enter number of apples?\");
   Class Name: JOptionPane
   Method Name:showInputDialog()
   Argument: Enter number of apples?
Question 24.
\"   Test\\\\
It\"
Question 25.
a. Graphics
b. JFrame
c. JApplet
d. JFrame