Arrays - Part 2

Notes

Review of lab - ArrayPlay.java  Reading reference (8.2) Note: This is not exactly like your assignment.

Passing arrays as arguments to and from methods.  See Arrays class.

The final piece to the header: public static void main( String args[])  What does this mean?

And how do we use it?  Command line arguments: Argue.java Book reference (8.12)

Arrays of objects. 

For each loop (modified for loop) ManyDice.java

Some specialized Array class tools.

Things to remember about arrays:

Feature Syntax Example
Declaration data-type [] variable-name; int [] gradeArray;
Card [] deck;
Declaration
(alternative)		 data-type variable-name[]; int gradeArray [];
Card deck [];
Initializer list data-type [] list = { value, value, ... value} String [] names = { "bob", "ann", "amy", "sue", "sam"};
Instantiation new data-type[int-value] intArray = new int [25];
deck = new Card [cardCount];
Instantiation and initialization new data-type[] { value, value, ... value } names = new String [] { "bob", "ann", "sue", "sam" }; return new int [] {0};
Referring to the
array as a whole		 var-name return deck;
intArray = grades;

array2.equals(array1);
(What do you think this compares?)

arrLength = names.length;
Specialized Arrays methods java.util.Arrays.fill(grades, 100);
java.util.Arrays.equals(section1, section2);
java.util.Arrays.sort(names);
java.util.Arrays.toString(names)
Referring to array elements var-name[int-value] return deck[0];
intArray[ii] = grades[jj];
rank = deck[ii].getRank();
while (intArray[ii] == 5)