You execute the code below in an empty directory. What is the result? File f1 = new File ("dirname");F ile f2 = new File (f1, "filename");

Related MCQs

• How can you change the current working directory using an instance of the File class called FileName?
• If you run the code below, what gets printed out?String s=new String ("Bicycle"); int iBegin=1; char iEnd=3; System.out.println (s.substring (iBegin, iEnd));
• Given the following code:~~~class Base { int x = 10; }~~~class Derived extends Base~~~{ int x = 20; }~~~Base b = new Base();~~~Derived d = new Derived ( );~~~Base bd = new Derived(); The statement~~~System.out.println(b.x + " " + d.x + " " + bd.x);~~~will produce the output
• Consider public class MyClass{ public MyClass(){/*code*/} // more code... } To instantiate MyClass, you would write?
• Suppose A is an abstract class ,B is a concrete subclass of A, and both A and B have an default constructor. Which of the following is correct? a) A a = new A(); b)A a = new B(); c) B b = new A(); d) B b = new B();
• The _______ supports several constructors to create an empty String.
• What will be the result of compiling the following code?~~~public class Test~~~{~~~static int age;~~~public static void main (String args [])~~~{~~~age = age + 1;~~~System.out.println("The age is " + age);~~~}~~~}
• Which of the following loops will execute the body of loop even when condition controlling the loop is initially false?
• Given the following declarations String s1=new String("Hello") ; String s2=new String("there"); String s3=new String(); Which of the following are legal operations?
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