Java

Question: To get any input from the keyboard which package we have to include?
A
import java io

B
import java.io.*;

C
import java.*;

D
None of the above

Note: Not available
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Question: To get any input from the keyboard we have to include the package import java.io.*
A
True

B
False

Note: Not available
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Question: Take a close look at the following code. Which one will provide the addition activity?
A
class Calculator{

public static void main(String args[]){

   adds(10,10);

}

public static void adds(int a,int b){

   System.out.println(a+b);

}

}

B
class Calculator{

public static void main(String args[]){

   adds(10,10);

}

public static void adds(){

   System.out.println(a+b);

}

}

C
class Calculator{

public static void main(String args[]){

   adds(10,10);

}

}

D
None of the above

Note: Not available
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Question: The information provided within the parenthesis is called arguments.
A
False

B
True

Note: Not available
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Question: Arguments are optional in any method.
A
True

B
False

Note: Not available
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Question: A method is a series of statements that carry out a task.
A
True

B
False

Note: Not available
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Question: The language Java was initially called ______
A
Java

B
Oak

C
Java2

D
Tea Java

Note: Not available
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Question: Java was conceived at Sun Microsystems, Inc. in ______.
A
1994

B
1995

C
1990

D
1991

Note: Not available
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Question: Which four options describe the correct default values for array elements of the types indicated? 1. int -> 0 2. String -> "null" 3. Dog -> null 4. char -> '\u0000' 5. float -> 0.0f 6. boolean -> true
A
1, 2, 3, 4

B
1, 3, 4, 5

C
2, 4, 5, 6

D
3, 4, 5, 6

Note: (1), (3), (4), (5) are the correct statements. (2) is wrong because the default value for a String (and any other object reference) is null, with no quotes. (6) is wrong because the default value for boolean elements is false.
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Question: Which one of these lists contains only Java programming language keywords?
A
class, if, void, long, Int, continue

B
goto, instanceof, native, finally, default, throws

C
try, virtual, throw, final, volatile, transient

D
strictfp, constant, super, implements, do

E
byte, break, assert, switch, include

Note: All the words in option B are among the 49 Java keywords. Although goto reserved as a keyword in Java, goto is not used and has no function. Option A is wrong because the keyword for the primitive int starts with a lowercase i. Option C is wrong because "virtual" is a keyword in C++, but not Java. Option D is wrong because "constant" is not a keyword. Constants in Java are marked static and final. Option E is wrong because "include" is a keyword in C, but not in Java.
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Question: To get any input from the keyboard which package we have to include?

Question: To get any input from the keyboard we have to include the package import java.io.*

Question: Take a close look at the following code. Which one will provide the addition activity?

Question: The information provided within the parenthesis is called arguments.

Question: Arguments are optional in any method.

Question: A method is a series of statements that carry out a task.

Question: The language Java was initially called ______

Question: Java was conceived at Sun Microsystems, Inc. in ______.

Question: Which four options describe the correct default values for array elements of the types indicated? 1. int -> 0 2. String -> "null" 3. Dog -> null 4. char -> '\u0000' 5. float -> 0.0f 6. boolean -> true

Question: Which one of these lists contains only Java programming language keywords?