Quiz on Java Assert

Which type of error is raised while not enabling assertions ?

Which of the following is the correct syntax of assertion ?

class Main {

public static void main ( String args [ ] )

{

int weight = 60;

assert weight<=50:”Cannot donate blood”;

System.out.println(“Can donate blood”);

}

}

What is the output of the program ?

Which of the following throws exceptions in assert statements ?

class Counting {

public static void main ( String args [ ] )

{

Scanner sc = new Scanner();

int value = sc.nextInt();

assert value>30:”cannot be included”;

System.out.println(value);

}

}

What should be the input to print “cannot be included” in the given program ?

 class Exception {

public static void main ( String args [ ] )

{

float price = 100.0;

assert price<=100:”Affordable”;

System.out.println(“not affordable”);

}

}

What will be the output of the program ?

Which of the following statements are used to enable assertions in the program ?

class AssertionExample {

public static void main ( String args [ ] )

{

String data = “DataFlair”;

assert data==”DataFlair”:”String matches”;

System.out.println(“Strings are not matching.”);

}

}

What should be the executional statement for the given program ?

class Function {

public static void main ( String args [ ] )

{

String a = “Data”;

System.out.println(a.isEquals(“Data”) assert);

System.out.println(“Both are same”);

}

}

What is the output of the program ?

Which of the following is the main usage of assertions in the program ?

class One {

public void method( int a )

{

assert a<5:”values are very less”;

System.out.println(a);

}

}

class Two {

public int function ( int b )

{

assert b>5&&<10:”Values are moderate”;

return b;

}

}

class Three {

public void demo ( int c )

{

assert c>10:”Values are high”);

System.out.println(c);

}

}

class Main {

public static void main ( String args [ ] )

{

One o = new One();

Two t = new Two();

Three obj = new Three();

o.method(3);

System.out.println(t.function(7));

obj.demo(12);

}

}

What will be the output of the program ?

 class Main {

public static void main ( String args [ ] )

{

String message=”DataFlair”;

assert message.isEquals(“Webservices”);”DataFlair Webservices”);

System.out.println(message);

}

}

What is the output of the program ?

Which of the following is true about enabling assertions ?

class Sample {

public static void main ( String args [ ] )

{

float pressure = 90.0;

assert pressure<80:”Low pressure”;

System.out.println(“Pressure is normal”);

}

}

What is the output of the program ?

 class Main {

public static void main ( String args [ ] )

{

int a = 10;

int b = 20;

assert a<15;b>15:a>20:”Not accepted”;

System.out.println(“Values are accepted”);

}

}

What is the error in the program ?