Assessment

1. 

Set val = new TreeSet();

val.add("6");

val.add(7);

With warning and throw below Exception when run.

java.lang.ClassCastException: java.lang.String incompatible with java.lang.Integer

 

2. public class FileReader extends InputStreamReader

 

3. Order

 

static {System.out.println("111");}

 

{System.out.println("222");}

public constuctor() {

System.out.println("333");

}