/Java/Java define a generic class that produces

Java define a generic class that produces

List<String> list1 = new ArrayList<String>(); // java 7 ? List<String> list1 = new ArrayList<>(); 
list1.add("abc");
//list1.add(new Integer(5)); //compiler error

for(String str : list1){
     //no type casting needed, avoids ClassCastException
}

-1

Source: journaldev.com

Java define a generic class that produces

List list = new ArrayList();
list.add("abc");
list.add(new Integer(5)); //OK

for(Object obj : list){
	//type casting leading to ClassCastException at runtime
    String str=(String) obj; 
}

-2

Source: journaldev.com

Similar codes

0 vote326 views1 answer
URI/BEE problem no-1101 solution in Java
Java
0 vote323 views1 answer
Java static generic method
Java
1 vote328 views1 answer
Open camera in adapter and set image in imageview in android
Java
2 votes344 views1 answer
For loop in multidimensional array java
Java
0 vote325 views1 answer
Filterreader converts a string to uppercase java
Java
0 vote310 views1 answer
Jpa page sort
Java
2 votes340 views3 answers
Fill a 2d array java
Java
0 vote349 views2 answers
How to do two constructors with super
Java
1 vote342 views1 answer
Initialize hashset with values java 9
Java
0 vote336 views1 answer
Get sum of array and return string
Java