JAVA Constructors and Methods
What is the output of the above program ?class Num { Num(double x ){ System.out.println( x ) ; } }public class Test extends Num { public static void main(String[] args){ Num num = new Num( 2 ) ; } }

0
None of these
Compile time error
2.0

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JAVA Constructors and Methods
The following code contains one compilation error, find it?public class Test {Test() { } // line 1static void Test() { this(); } // line 2 public static void main(String[] args) { // line 3Test(); // line 4}}

At line 2, constructor call
At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor
At line 1, constructor Tester must be marked public like its class
At line 4

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JAVA Constructors and Methods
What is the expected output?public class Profile { private Profile(int w) { // line 1 System.out.print(w); } public static Profile() { // line 5 System.out.print (10); } public static void main(String args[]) { Profile obj = new Profile(50); }}

Won't compile because of line (5), constructor can't be static
10 50
50
Won't compile because of line (1), constructor can't be private

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