Something

ssta@yaffle:~/Scratch$ cat Main.javaimport java.util.HashMap;import java.util.Map;public class Main{      public static void main(String[] args)     {              Map<String, Integer>[] foo;              foo=new HashMap[5];              foo[0]=new HashMap<String, Integer>();              foo[0].put("key", 1);              System.out.println(""+foo[0].get("key"));     }}ssta@yaffle:~/Scratch$ javac -Xlint:unchecked Main.javaMain.java:11: warning: [unchecked] unchecked conversionfound   : java.util.HashMap[]required: java.util.Map<java.lang.String,java.lang.Integer>[]              foo=new HashMap[5];                  ^1 warningssta@yaffle:~/Scratch$ java Main1