Steve M Steve M - 2 years ago 122
Java Question

Java ArrayList and HashMap on-the-fly

Can someone please provide an example of creating a Java ArrayList and HashMap on the fly? So instead of doing an add() or put(), actually supplying the seed data for the array/hash at the class instantiation?

To provide an example, something similar to PHP for instance:

$array = array (3, 1, 2);

$assoc_array = array( 'key' => 'value' );

Answer Source
List<String> list = new ArrayList<String>() {

Map<String,String> map = new HashMap<String,String>() {
    put("key1", "value1");
    put("key2", "value2");
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