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Java Questions Set 67:

Quiz Mode

Java always support the call by value

True

False

Solution:

Java system properties can be set at runtime

True

False

Solution:

What will be the output of the following Java code?

Solution:

In java servlet method init() is called how many times

none of them

Solution:

What is the data type used for thread priority in Java?

Integer

Float

Double

Long

Solution:

use of Trim in java

to remove the extra space

to add extra space

to change the line

nothing from these

Solution:

What is a Collection in Java?

A group of classes

A group of objects

A group of interfaces

None of the mentioned

Solution:

Which one is a valid declaration of a boolean?

boolean b1 = 0;

boolean b2 = 'false';

boolean b3 = false;

boolean b4 = Boolean.false();

Solution:

What will be the output of the following Java program?

`class Output`

`{`

`public static void main(String[] args)`

`{`

`StringBuffer c = new StringBuffer("Hello");`

`StringBuffer c1 = new StringBuffer(" World");`

`c.append(c1);`

`System.out.println(c);`

`}`

`}`

Hello

World

Helloworld

Hello World

Solution:

Which of the following is true about private constructor?

it eases the instantiation of a class

it allows creating objects in other classes

it ensures only one instance of a class exist at any point of time

it ensures multiple instances of a class exist at any point of time

Java Questions Set 67:

Java always support the call by value

Solution:

Java system properties can be set at runtime

Solution:

What will be the output of the following Java code?

Solution:

In java servlet method init() is called how many times

Solution:

What is the data type used for thread priority in Java?

Solution:

use of Trim in java

Solution:

What is a Collection in Java?

Solution:

Which one is a valid declaration of a boolean?

Solution:

What will be the output of the following Java program?

`class Output`

`{`

`public static void main(String[] args)`

`{`

`StringBuffer c = new StringBuffer("Hello");`

`StringBuffer c1 = new StringBuffer(" World");`

`c.append(c1);`

`System.out.println(c);`

`}`

`}`

Solution:

Which of the following is true about private constructor?

Solution:

Related Question Sets:

Related Topics:

Java Questions Set 67:

Java always support the call by value

Solution:

Java system properties can be set at runtime

Solution:

What will be the output of the following Java code?

Solution:

In java servlet method init() is called how many times

Solution:

What is the data type used for thread priority in Java?

Solution:

use of Trim in java

Solution:

What is a Collection in Java?

Solution:

Which one is a valid declaration of a boolean?

Solution:

What will be the output of the following Java program? class Output { public static void main(String[] args) { StringBuffer c = new StringBuffer("Hello"); StringBuffer c1 = new StringBuffer(" World"); c.append(c1); System.out.println(c); } }

Solution:

Which of the following is true about private constructor?

Solution:

Related Question Sets:

Related Topics:

What will be the output of the following Java program?

`class Output`

`{`

`public static void main(String[] args)`

`{`

`StringBuffer c = new StringBuffer("Hello");`

`StringBuffer c1 = new StringBuffer(" World");`

`c.append(c1);`

`System.out.println(c);`

`}`

`}`