Java

Question 26

Which of the following statements is used to create an object to write to a file named out.dat?

BufferedWriter outfile = new BufferedWriter(FileWriter("out.dat"));

BufferedWriter outfile = new BufferedWriter (new File("out.dat"));

BufferedWriter outfile = new BufferedWriter (new FileWriter("out.dat"));

BufferedWriter outfile = new BufferedWriter ("out.dat");

Question 27

Which statement is used to create a file object that will append data to an existing file? BufferedWriter salesdata =

new BufferedWriter(new FileWriter("out.dat", false);.

new BufferedWriter(new FileWriter("out.dat", true);.

new BufferedWriter(new FileWriter("out.dat");.

new BufferedWriter(new FileWriter("out.dat", append);.

Question 28

Which class can be used to read data into a text file?

BufferedReader

System

ReadFile

FileRead

Question 29

What information may be obtained from a ResultSetMetaData object?(TCOs 16) What information may be obtained from a ResultSetMetaData object?

Number of columns in the result set

Database URL and product name

Number of rows in the result set

JDBC driver name and version

Question 30

Which of the following statements is false?

All the methods in JRadioButton are inherited from javax.swing.AbstractButton.

You can use an icon on JRadioButton.

JButton and JRadioButton fire same types of events.

All the methods in JRadioButton are also in JButton.