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Multi Threading

Question : 3

Total: 44

Given:

public class TestSeven extends Thread {
  private static int x;
  public synchronized void doThings() {
   int current = x;
   current++;
   x = current;
  }
  public void run() {
   doThings();
  }
}

Which statement is true?

Compilation fails.
An exception is thrown at runtime.
Synchronizing the run() method would make the class thread-safe.
The data in variable "x" are protected from concurrent access problems.
Declaring the doThings() method as static would make the class thread-safe.
Wrapping the statements within doThings() in a synchronized(new Object()) { } block would make the class thread-safe.

Validate

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