Type of list in Java

Where

• list object of List interface.

• T The generic type parameter passed during list declaration.

Description

The T is a type parameter passed to the generic interface List and its implemenation class ArrayList.

Example

Create the following java program using any editor of your choice.

integerList = new ArrayList(); integerList.add(Integer.valueOf(10)); integerList.add(Integer.valueOf(11)); List stringList = new ArrayList(); stringList.add("Hello World"); stringList.add("Hi World"); System.out.printf("Integer Value :%d\n", integerList.get(0)); System.out.printf("String Value :%s\n", stringList.get(0)); for(Integer data: integerList) { System.out.printf("Integer Value :%d\n", data); } Iterator stringIterator = stringList.iterator(); while(stringIterator.hasNext()) { System.out.printf("String Value :%s\n", stringIterator.next()); } } }

This will produce the following result

Output

Integer Value :10 String Value :Hello World Integer Value :10 Integer Value :11 String Value :Hello World String Value :Hi World

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