JAVA Constructors and Methods
class A{ A(String s){} A(){}}1. class B extends A{2. B(){}3. B(String s){4. super(s);5. }6. void test(){7. // insert code here8. }9. }Which of the below code can be insert at line 7 to make clean compilation ?

A a = new B();
None of these
A a = new B(5);
A a = new A(String s);
All of these

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

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JAVA Constructors and Methods
Which of these is a legal definition of a method named examveda assuming it throws IOException, and returns void. Also assume that the method does not take any arguments. Select the one correct answer.

void examians() {} throws IOException
void examians(void) throws IOException{}
void examians() throw IOException{}
examians() throws IOException{}
void examians() throws IOException{}

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