Exam 3: Introduction to Objects and Inputoutput

Which package is automatically imported by the Java system?

In a format specifier, if the flag is set to 'l', then the output of the result is left justified.

Which of the following is a valid statement? (i) int num = new int(67); (ii) String name = new ("Doe"); (iii) String name = "Doe";

Given int num; the value of num is directly stored in its memory space.

Suppose that name is a String variable. Then the following two statements are equivalent. name = "Danny"; name = new String("Danny");

What happens when JOptionPane.PLAIN_MESSAGE is chosen as the messageType parameter?

Suppose str is a String variable. The statement str = new String("Programming"); is similar to which of the following?

When writing output to a file, if the file is not closed at the end of the program, you may not be able to view your output properly.

Based on the code above, what is the value of str4?

What will most probably happen if you omit the dot operator when accessing a method?

Which of the following method is contained in the package java.util?

The showMessageDialog method has ____ parameter(s).

Reference type variables directly store data into their memory space.

Consider the following statements. double x; String y; y = String.format("%.2f", x); If x = 285.679, what is the value of y?

There are ____ type(s) of methods in a class.

Java provides automatic garbage collection.

The statement System.exit(0); is found at the end of every working Java program.

Based on the code above, what is the value of str2?

The new operator is used to create an int variable.

Which of the following is an area of secondary storage used to hold information?