Finding and fixing errors is called debugging the program.

Answer the following statements true (T) or false (F)

1) A main method can only access static or local variables. 2) In a class that has variables called height and width, methods called getHeight() and getWidth() are examples of accessor methods. 3) Every class has a constructor, whether defined by the programmer or not. 4) Variables that are declared as static are shared among all instances of a class. 5) Aggregation is sometimes described as a has-a relationship.

How many files are displayed now, more than before? Explain.

Work with hidden files in Linux. a. In Linux, files with names that begin with a ‘.’ (single dot) are not shown by default. While dot-files have nothing else special about them, they are called hidden files because of this feature. Examples of hidden files are .file5, .file6, .file7. b. Use ls -l to display the files stored in the analyst home directory.

[analyst@secOps ~]$ ls –l

c. Use the ls -la command to display all files in the home directory of analyst, including the hidden files.

[analyst@secOps ~]$ ls –la