2011年JAVA认证模拟题（49）
Q145 Which of the following lines of output are displayed by the following program?class Question {
public static void main(String args[])
{
MyThread t = new MyThread();
t.displayOutput ( “ t has been
created.”);
t.start();
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｝
class MyThread extend Thread {
public void displayOutput (String s) {
System.out.println(s);
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public void run() {
displayOutput (“t is running.”);
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A t has been created.
B t is running.
C The program will display different output depending on whether the underlying operating system supports preemptive scheduling or time slicing.
D None of the above. The program does not compile.
Q146 Which of the following extend the Collection interface?
A Dictionary
B List
C Map
D Set
Q147 Which of the following are true?
A Java only supports preemptive scheduling.
B Java only supports time slicing.
C The JVM has been implemented on operating systems that use time slicing.
D The JVM has been implemented on operating systems that use preemptive scheduling.
Q145 AB
Q146 BD
Q147 CD
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