Question 1

Syntax of System.arraycopy method??

java

System.arraycopy(fromarray,frominden,toarray,toindex,count);
System.arraycopy(toarray,toinden,fromarray,fromindex,count);
System.arraycopy(fromarray,toarray,count);
System.arraycopy();

Answer

Correct Option: A

Question 2

interface <interface name> extends <interface name1>Is correct???

technology programming languages

True
False

Answer

Correct Option: A

Question 3

Is Multiple Inheritance allowed in JAVA???

technology programming languages

True
False

Answer

Correct Option: B

Question 4

Is typecasting is allowed between two different objects of different classes???

technology programming languages

True
False

Answer

Correct Option: B

Question 5

clone method used for..???

technology programming languages

Used for Cloning or copying integer var
Used for Cloning or copying float var
Used for Cloning or copying String var
Used for Cloning an array

Answer

Correct Option: D

Question 6

By default type of variable(data members) in interface..???

technology programming languages

public,final
Only Final
Only Public
public,final,static

Answer

Correct Option: D

Question 7

String name="ALIEN"; name.reverse();
Is code successfully compiled..???

java

True
False

Answer

Correct Option: B

Question 8

int x = 10;
do {
 x--;
} while (x &lt; 10);

How many times the loop will be executed?

java

ten times
zero times
one to nine times
more than ten times

Answer

Correct Option: D

Question 9

int x = 0;
int y = 10;
do {
 y--;
 ++x;
} while (x &lt; 5);
System.out.print(x + "," + y);

What is the result?

java

5,6
5,5
6,5
6,6

Answer

Correct Option: B

Question 10

public static void main(String[] args) {
 Integer i = new Integer(1) + new Integer(2);
 switch (i) {
  case 3:
   System.out.println("three");
   break;
  default:
   System.out.println("other");
   break;
 }
}

What is the output?

java

three
other
Compilation Fails
Exception

Answer

Correct Option: A

Question 11

String[] elements = {
 "for",
 "tea",
 "too"
};
String first = (elements.length &gt; 0) ? elements[0] : null;

What is the result?

java

Compilation fails
An exception is thrown at runtime
The variable first is set to null
The variable first is set to elements[0]

Answer

Correct Option: D

Question 12

public class CreditCard {
 private String cardID;
 private Integer limit;
 public String ownerName;
 public void setCardInformation(String cardID, String ownerName, Integer limit) {
  this.cardID = cardID;
  this.ownerName = ownerName;
  this.limit = limit;
 }
}

Which statement is true?

java

The class is fully encapsulated
The code demonstrates polymorphism
The ownerName variable breaks encapsulation
The cardID and limit variables break polymorphism

Answer

Correct Option: C

Question 13

int x = 12;
while (x &lt; 10) {
    x--;  
}  
System.out.print(x);

What is the result?

java

0
10
12
print statement never be executed

Answer

Correct Option: C

Question 14

System.out.format("Pi is approximately %d.", Math.PI); What is the result?

java

Compilation fails
Pi is approximately 3
Pi is approximately 3.141593
An exception is thrown at runtime

Answer

Correct Option: D

Question 15

NumberFormat nf = NumberFormat.getInstance(); nf.setMaximumFractionDigits(4);
nf.setMinimumFractionDigits(2);  
String a = nf.format(3.1415926);
String b = nf.format(2);

Which statement is true about the result?

java

The value of b is 2
The value of b is 2.00
The value of a is 3.1415
The value of a is 3.141

Answer

Correct Option: B

Question 16

public class Yippee2 {
  static public void main(String [] yahoo) {
  for(int x = 1; x &lt; yahoo.length; x++) {
  System.out.print(yahoo[x] + " ");
  }
 }
}

and the command line invocation: java Yippee2 a b c What is the result?

java

a b
b c
a b c
Compilation fails

Answer

Correct Option: B

Question 17

public static void main(String[] args) {
  String str = "null"; 
 if (str == null) {
  System.out.println("null");
  } else (str.length() == 0) {
  System.out.println("zero");
  } else {
  System.out.println("some");
  }  
}

What is the result?

java

null
zero
some
Compilation fails

Answer

Correct Option: D

Question 18

String[] elements = { "for", "tea", "too" }; 
String first = (elements.length &gt; 0) ? elements[0] : null;

What is the result?

java

Compilation fails
An exception is thrown at runtime
The variable first is set to null
The variable first is set to elements[0]

Answer

Correct Option: D

Question 19

public class CreditCard {  
  private String cardID;  
  private Integer limit;  
  public String ownerName;
  public void setCardInformation(String cardID,  String ownerName,  Integer limit) {  
  this.cardID = cardID;  
  this.ownerName = ownerName;
  this.limit = limit; 
 }  
}

Which statement is true?

technology programming languages

The class is fully encapsulated
The code demonstrates polymorphism
The ownerName variable breaks encapsulation
The cardID and limit variables break polymorphism

Answer

Correct Option: C

Question 20

int x = 12;  
while (x &lt; 10) {  
   x--;  
}  
System.out.print(x);

What is the result?

java

0
10
12
print statement never be executed

Answer

Correct Option: C

Description: You will be given sample program or statement, Select appropriate output or statement from the given option
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: java programming language

Select the output of Java Program

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