Determine output:public class Test{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.val = 1; obj.call(obj); System.out.println(obj.val); }}class MyClass{ public int val; public void call(MyClass ref){ ref.val++; }}

JAVA Constructors and Methods
Determine output:public class Test{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.val = 1; obj.call(obj); System.out.println(obj.val); }}class MyClass{ public int val; public void call(MyClass ref){ ref.val++; }}

3

Compilation Error

2

None of these

1

3

Compilation Error

2

None of these

1

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JAVA Constructors and Methods
What will be the return type of a method that not returns any value?

double

void

None of these

int

double

void

None of these

int

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JAVA Constructors and Methods
What is Math.floor(3.6)?

4.0

4

3.0

3

4.0

4

3.0

3

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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 ) ; } }

Compile time error

0

None of these

2.0

Compile time error

0

None of these

2.0

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JAVA Constructors and Methods
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor?

public MyClass(void){}

1 and 3

MyClass(void) {}

public MyClass(){}

MyClass(){}

public MyClass(void){}

1 and 3

MyClass(void) {}

public MyClass(){}

MyClass(){}

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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 1, constructor Tester must be marked public like its class

At 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

At line 2, constructor call

At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor

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JAVA Constructors and Methods

JAVA Constructors and Methods Determine output:public class Test{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.val = 1; obj.call(obj); System.out.println(obj.val); }}class MyClass{ public int val; public void call(MyClass ref){ ref.val++; }}

JAVA Constructors and Methods What will be the return type of a method that not returns any value?

JAVA Constructors and Methods What is Math.floor(3.6)?

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 ) ; } }

JAVA Constructors and Methods public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor?

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}}

JAVA Constructors and Methods
Determine output:public class Test{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.val = 1; obj.call(obj); System.out.println(obj.val); }}class MyClass{ public int val; public void call(MyClass ref){ ref.val++; }}

JAVA Constructors and Methods
What will be the return type of a method that not returns any value?

JAVA Constructors and Methods
What is Math.floor(3.6)?

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 ) ; } }

JAVA Constructors and Methods
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor?

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}}