No. Sometimes strArray[j].length() will ask for the
length of a non-existent String.
Here is the complete program:
class StringArray
{
public static void main ( String[] args )
{
String[] strArray = new String[8] ;
strArray[0] = "Hello" ;
strArray[1] = "World" ;
strArray[2] = "Greetings" ;
strArray[3] = "Jupiter" ;
strArray[ strArray.length-1 ] = "the end" ;
for (int j=0; j < strArray.length; j++ )
if ( strArray[j] != null )
System.out.println( "Slot " + j + ": " + strArray[j] );
else
System.out.println( "Slot " + j + ": " + "empty" );
}
}
You may wish to copy this program to your editor and run it. First-string programers that run this code will see:
Slot 0: Hello Slot 1: World Slot 2: Greetings Slot 3: Jupiter Slot 4: empty Slot 5: empty Slot 6: empty Slot 7: the end