Lab02 Hints and Tips

Part 1

• In the convertSlashes method, write a for loop that retrieves each character of the String using charAt. Then if the character is a backslash ('\\'), use setCharAt to change the character to a forward slash ('/'). Your code might look like:

  StringBuffer sb = new StringBuffer(pathName);
  for(int i=0; i < pathName.length(); i++)
  {
     char ch = pathName.charAt(i);
  
     . . .
  }
  return sb.toString();
                  

• In your test-case class, verify the method using code like:

@Test
public void testConvertSlashes()
{
  assertEquals(
    "/java/hsqldb/doc/images/sqlDDL.gif",
       ConvertSlashes.convertSlashes(
          "\\java\\hsqldb\\doc\\images\\sqlDDL.gif"));
}

		

Part 2

• The BrowserInfo class should define fields of type String for BrowserName and ClientOsName

private String browserName;
private String clientOsName;	    
	    

• For the get/set methods, you can first define the fields and then use Eclipse's Source - Generate Getter/Setter menu so you don't have to write the get/set methods manually
• The constructor method should look like:

public BrowserInfo (String userAgent)
{

}		
		

• In the constructor, write an if-else that uses the String class's indexOf method to find appropriate substrings and then initialize the BrowserInfo class's fields. For example:

if(userAgent.contains("Chrome"))
{
  browserName = "Chrome";
}
else if....
		

• Your test-case class might have several testing methods to test various combinations of browsers and operating systems. Here's an example of one of the test methods:

@Test
public void testChromeWindows10()
{
  BrowserInfo bi = new BrowserInfo(
  "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36");

  assertEquals("Chrome", bi.getBrowserName());
  assertEquals("Windows 10", bi.getClientOsName());
}