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单选题

public class X implements Runnable (  private int x;  private int y;  public static void main(String [] args) (  X that = new X();  (new Thread(that)) . start( );  (new Thread(that)) . start( );  )  public synchronized void run( ) (  for (;;) (   x++;  y++;  System.out.printIn(“x = “ +  x  + “, y = “ + y);  )  )  )   What is the result?()  

发布日期:2020-04-10

public class X implements Runnable (  private int ...
A

An error at line 11 causes compilation to fail.

B

Errors at lines 7 and 8 cause compilation to fail.

C

The program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”)

D

The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”)

E

The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=2s, y=2”)

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