Given the code: Integer i= new Integer("1"); if (i.toString() == i.toString()) System.out.println("Equal"); else System.out.println("Not Equal");

which statement is True ?

The keyword that ensures a field is coherently accessed by multiple threads is:

A "blank" final variable (defined without an initial value):

The TreeMap class is Java's implementation of which data structure?

Which two are valid constructors for Thread? 1. Thread(Runnable r, String name) 2. Thread() 3. Thread(int priority) 4. Thread(Runnable r, ThreadGroup g) 5. Thread(Runnable r, int priority)

JDBC addresses the issue of transactions.

The "java" command line tool is used to:

What is the benefit of ConcurrentHashMap<K,V>?

How should you create a new class that maps keys to values, using the Java Collections Framework?

What is the output of the below code ? int a = 0; int b = 0; if (a++ == 1 || b++ == 1) {} System.out.println(a + " " + b);