Like all other variables in Java, an array must have a specific
type like byte, int, String
or double. Only variables of the appropriate type can
be stored in an array. One array cannot store both ints and
Strings, for instance.
Like all other variables in Java an array must be declared. When
you declare an array variable you suffix the type with
[] to indicate that this variable is an array. Here are some
examples:
int[] k;
float[] yt;
String[] names;
This says that k is an array of ints, yt
is an array of floats and names is an array of
Strings. In other words you declare an array like you declare any
other variable except that you append brackets to the end of the
type.
You also have the option to append the brackets to the variable instead of the type.
int k[];
float yt[];
String names[];
However, unlike in C, you cannot include the length of the array in the declaration. The following is a syntax error:
int k[3];
float yt[7];
String names[100];
int k[];
float yt[];
String names[];