Quiz on Type Conversion in Java

Which of the following data types cannot be used for type conversion ?

 class Convert {

public static void main ( String args [ ] )

{

int i = 10;

long l = i;

if( i == l )

{

System.out.println(“Type conversion successful”);

} else {

System.out.println(“Type Conversion is unsuccessful”);

}

}

}

What is the output of the program ?

class Expression {

public static void main ( String args [ ] )

{

int a = 1;

long b = 2;

double c = 20.5;

float d = 1.5;

System.out.println( (a+b) * (c-d) );

}

}

What will be the output of the program ?

 In which of the following cases Implicit conversion takes place ?

 class Converter {

public static void main ( String args [ ] )

{

String a = ‘a’;

String b = ‘A’;

int i = a;

int j = b;

System.out.println(a +  “ “ + b );

}

}

What is the value of i and j in the program ?

class Integer {

public static void main ( String args [ ] )

{

int i = 1;

char c = (char) i;

System.out.println(c);

}

}

What is the output of the program ?

 Which of the following is the process of converting a smaller primitive data type into a bigger primitive data type ?

 class Conversion {

public static void main ( String args [ ] )

{

String x = ‘a’;

int y = x;

System.out.println(y);

}

}

What is the error in the program ?

9. Which of the following is the correct syntax to convert a double value to an int value ?

Which of the following is the smallest of all data types ?

 class Conversion {

public static void main ( String args [ ] )

{

int x = 10;

double y = (double)x;

int z;

System.out.println(y + ” ” +  (z = (int)y) );

}

}

What will be the output of the program ?

class Byte {

public static void main ( String args [ ] )

{

char a = ‘1’;

byte b = (byte)a;

System.out.println(b);

}

}

What is the output of the program ?

When a data type is automatically converted it is known as ?

class Long {

public void display(int i )

{

long l = i;

System.out.println(l);

}

}

class Double {

public void print ( int i )

{

double d = i;

System.out.println(d);

}

}

class Main {

public static void main ( String args [  ] )

{

Long obj1 = new Long(2);

Double obj2 = new Double();

obj2.print(4);

}

}

What is the output of the program ?

 class Type {

public static void main ( String args [ ] )

{

int a = 10 ;

int b = 5;

long c = a+b;

float d = c;

System.out.println(d);

}

}

What will be the output of the program ?