2011年JAVA认证模拟题第二阶段（26）

会计考友 · 发表于 2012-8-4 12:33:16

　　Q76.Read the following snippet carefully
　　1. public synchronized void someMethod() {
　　2. //lots of code
　　3. try {
　　4. Thread.sleep(500);
　　5. ｝ catch(InterruptedException e) {
　　6. //do some things here.
　　7. ｝
　　8. //more and more code here
　　9. ｝
　　Select all correct answers
　　a. The code causes compilation error - sleep cannot be called inside synchronized methods.
　　b. The Thread sleeps for at least 500 milliseconds in this method if not interrupted.
　　c. When the thread “goes to sleep” it releases the lock on the object.
　　d. The “sleeping” Threads always have the lock on the Object.
　　Q77.What will be the result of attempt to compile and the run the following code
　　1. public class ADirtyOne {
　　2. public static void main(String args[]) {
　　3. System.out.println(Math.abs(Integer.MIN_VALUE));
　　4. ｝
　　5. ｝
　　Select one correct answer
　　a. Causes a compilation error.
　　b. Causes no error and the value printed on the screen is less than zero.
　　c. Causes no error and the value printed on the screen is one more than Integer.MAX_VALUE
　　d. Will throw a runtime exception due to overflow - Integer.MAX_VALUE is less in magnitue than Integer.MIN_VALUE.
　　Q78.What is the result of attempting to compile and run the following program
　　1. public class Test {
　　2. public void method(Object o) {
　　3. System.out.println(“Object Version”);
　　4. ｝
　　5. public void method(String s) {
　　6. System.out.println(“String Version”);
　　7. ｝
　　8. public static void main(String args[]) {
　　9. Test test = new Test();
　　10. test.method(null);
　　11. ｝
　　12. ｝
　　Select one correct answer
　　a. The code does not compile.
　　b. The code compiles cleanly and shows “Object Version”.
　　c. The code compiles cleanly and shows “String Version”.
　　d. The code throws an Exception at Runtime.
　　76. bd
　　77. b
　　78. c

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[考试试题] 2011年JAVA认证模拟题第二阶段（26）