Question
class Test
{
public static void main(String [] args)
{
printAll(args);
}
public static void printAll(String[] lines)
{
for(int i = 0; i < lines.length; i++)
{
System.out.println(lines[i]);
Thread.currentThread().sleep(1000);
}
}
}
class Test
{
public static void main(String [] args)
{
printAll(args);
}
public static void printAll(String[] lines)
{
for(int i = 0; i < lines.length; i++)
{
System.out.println(lines[i]);
Thread.currentThread().sleep(1000);
}
}
}
the static method Thread.currentThread() returns a reference to the currently
executing Thread object. What is the result of this code?
Answer: Option D
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D. The sleep() method must be enclosed in a try/catch block, or the method printAll() must
declare it throws the InterruptedException.
A is incorrect, but it would be correct if the InterruptedException was dealt with.
B is incorrect, but it would still be incorrect if the InterruptedException was dealt with because
all Java code, including the main() method, runs in threads.
C is incorrect. The sleep() method is static, so even if it is called on an instance, it still always
affects the currently executing thread.
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