- In primitive arrays as array elements is allowed which can be promoted to declare type.
Example:
For int arrays allowed array elements types are byte, short, char, int.
int[] a=new int[10];
a[0]=86;
a[1]=’x’;
byte b=10;
a[2]=b;
short s=30;
a[3]=s; - Object type arrays, array elements can be either declared type objects or its child class objects.
Example1:
Number[] n=new Number[10];
a[0]=new Double(5.5);
a[1]= new Integer(5);
Example2:
Object[] a=new Object[10];
a[0]=new String(“WebnoidSchools”);
a[1]=new Integer(10);
a[2]=new Object(); - Interface type arrays as array elements can provide its implemented class objects.
Example:
Runnable[] r=new Runnable[10];
r[0]=new Thread();
r[1]=new String(“Webnoidschool”);
| Array Type | Allowed element Type |
| Primitive arrays | Any type which can be promoted to declared type. |
| Object type array | Either declared type or its child class objects allowed. |
| Interface type array | Its implemented class objects allowed. |
| Abstract class type array | Its child class objects are allowed. |