单项选择题
A. Compilation fails.
B. An exception is thrown.
C. The wait() method has no effect.
D. Thread X receives the lock immediately.
E. Object A moves the thread to the wait pool.
单项选择题 public class SyncTest { private int x; private int y; private synchronized void setX( int i ) { x = i; } private synchronized void setY( int i ) { y = i; } public void setXY( int i ) { setX(i); setY(i); } public synchronized boolean check() { return x != y; } } Under which condition will check return true when called from a different class? ()
单项选择题 package foo; public class Outer { public static class Inner { } } Which statement is true?()
单项选择题 class A { public A() { System.out.println(“hello from a”); } } class B extends A { public B () { System.out.println(“hello from b”); super(); } } public class Test { public static void main(String args[]) { A a = new B(); } } What is the result when main is executed?()