Which primitive type would be best to represent the population of the U.S. in 2003? A) int (or long ) B) float (or double) C) char D) long,Java, C ,C++, ASP, ASP.net C# ,Struts ,Questions & Answer, Struts2, Ajax, Hibernate, Swing ,JSP , Servlet, J2EE ,Core Java ,Stping, VC++, HTML, DHTML, JAVASCRIPT, VB ,CSS, interview ,questions, and answers, for,experienced, and fresher
Which primitive type would be best to represent the population of the U.S. in 2003?
A) int (or long )
B) float (or double)
C) char
D) long

A) int (or long)
Explanation : here we can use int , But where we dony know whats the exact no of the things , There we can use long .

More interview questions and answers

What is the value of a[3] as the result of the following array declaration?

Choose correct primitive type in Java?

Select two correct declaration and initialization(with four elements) of an array?

When happen when compile and run following code: public class R4RSCJPTest { public static void main(String [] args) { Test [][] ABC = new Test[2][]; System.out.println(ABC[1][0].toString()); } } class Test {}

Select two correct options from the followings.

Class, Method, and Variable Modifiers

Flow Control

Error Handling

Package Control

Primitives

Variable Keywords

void Return Type Keyword

Select three correct options than comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i=1, j=1; try { i++; j--; if(i/j > 1) i++; } catch(ArithmeticException e) { System.out.println(0); } catch(ArrayIndexOutOfBoundsException e) { System.out.println(1); } catch(Exception e) { System.out.println(2); } finally { System.out.println(3); } System.out.println(4); } }

Select correct options that comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i=2, j=1; try { i--; j++; if(i != j) i--; } catch(ArithmeticException e) { System.out.println(0); } catch(ArrayIndexOutOfBoundsException e) { System.out.println(1); } catch(Exception e) { System.out.println(2); } finally { System.out.println(3); } System.out.println(4); } }

What happen when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { String str1 = "xyz"; String str2 = new String("xyz"); if(str1 == str2) System.out.println(0); else System.out.println(1); if(str1.equals(str2)) System.out.println(2); else System.out.println(3); } }

What result comes when compile and run following code: public class Test { public static void main(String args[]) { String str1 = "xyz"; String str2 = "xyz"; if(str1 == str2) System.out.println(0); else System.out.println(1); if(str1.equals(str2)) System.out.println(2); else System.out.println(3); } }

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i = 2; do { i++; }while (i > 2); System.out.println(i); } }

In the following method at what stage does the object initially referenced by s becomes available for garbage collection? void method abc() { String str1 = new String("xyz"); String str2 = new String("xyz"); str1 = str1+1; //1 str1 = null; //2 str2 = str2 + str1; //3 } //4

From the following statement select two correct options.

Select two options which are correct in case of interface.

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i; float f = 2.4f; i = ((int)Math.ceil(f)) * ((int) Math.floor(f)); System.out.println(i); } }

What result come when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i; float f = 1.7f; double d1 = 2.7; double d2 = 2.4; i = ((int)Math.ceil(f)) * ((int)Math.round(d1)) * ((int)Math.round(d2)); System.out.println(i); } }

Which of these classes are defined in java.io and used for file handling are abstract.

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { String str1="abcd"; String str2="efgh"; String str3=str1.concat(str2); str1.concat(str2); System.out.println(str1); } }

What result comes when we compile and run following code: public class Test { public static void main(String args[]) { String str1="abcd"; String str2="efgh"; String str3=str1.concat(str2); str1 = str1.concat(str2); System.out.println(str1); } }

What result comes when we compile and run following code: public class Test { public static void main(String args[]) { String str1="abcd"; String str2="efgh"; String str3=str1.concat(str2); str1 = str1.concat(str2); System.out.println(str1); } }

What result comes when we compile and run following code: public class Test { public static void main(String args[]) { String str1="abcd"; String str2="efgh"; String str3=str1.concat(str2); str1 = str1.concat(str2); System.out.println(str1); } }

Literals and Ranges of All Primitive Data Types

Range of Primitive Types

Literal Values for All Primitive Types

Integer Literals

Decimal Literals

Octal Literals

Hexadecimal Literals

Floating-Point Literals

Boolean Literals

Character Literals

Literal Values for Strings

Which primitive type would be best to represent the number of stars in the universe? A) long B) char C) char [] D) int

Which primitive type would be best to represent a single multiple choice question on a test, with only one answer allowed? A) float B) int C) char [] D) char

Which primitive type would be best to represent a single multiple choice question on a test, with more than one answer allowed? A) char B) long C) char [] D) int

Which primitive type would be best to represent the population of the U.S. in 2003? A) int (or long ) B) float (or double) C) char D) long

Which primitive type would be best to represent the amount of money (in dollars and cents) you plan on having at retirement? A) char B) long C) int (or long) D) float (or double)

Array

Choose correct collection interface which we use to represent stored elements into in particular sequence order.

Declaring an Array

Constructing an Array

Select correct method which is defined in Object class and can also used to convert an Integer Object into primitive int type.

Which are the legal identifiers from below.Select three correct options.

Select correct width (in bits) of double primitive type in Java.

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int x = 15, y; if(x < 15) y = 3; if(x>= 15) y = 4; System.out.println("Value of y is " + y); } }

Initializing an Array

What result comes when we compile and run following code: class R4RSCJPTest { int i; int j; String str; public static void main(String args[]) { R4RSCJPTest test = new R4RSCJPTest(); System.out.println("String is " + test.str + " " + test.i + " " + test.j); } }

Select three correct options related to Java programming language.

What result comes when we compile and run following code: class R4RSCJPTest { public static void main() { System.out.println("Welcome"); } }

Select correct options which is use to declare main method.

Initializing Elements in a Loop

Declaring, Constructing, and Initializing on One Line

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int x, y; int z = 4; z++; y = 3; y++; z = y = z = 2; System.out.println("Value of z is = "+z ); } }

Constructing and Initializing an Anonymous Array

Arrays of Primitives

Arrays of Object References

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int x, y; int z = 4; z++; y = 4; y++; z+= y-= x = 2; if( z == 6) z-= 3; else z+= 3; System.out.println("Value of z is "+z ); } }

Array Reference Assignments for One-Dimensional Arrays

Array Reference Assignments for Multidimensional Arrays

Using a Variable or Array Element That Is Uninitialized and Unassigned

What result comes when we compile and run following code: public class R4RSCJPTest { int i = 1; public static void main(String args[]) { int i = 2; i = new_i(i); System.out.println("New value of i is " +i); } public static int new_i(int i) { i = 3; i *= 4; return i; } }

What result comes when we compile and run following code: public class R4RSCJPTest { int i = 1; public static void main(String args[]) { int i = 2; new_i(i); System.out.println("New value of i is " +i); } public static void new_i(int i) { i = 3; i *= 4; } }

What result comes when we compile and run following code: public class R4RSCJPTest { int i[] = {0}; public static void main(String args[]) { int i[] = {1}; new_i(i); System.out.println("New value of i[0] is " +i[0]); } public static void new_i(int i[]) { i[0] = 2; i[0] *= 3; } }

What result comes when we compile and run(with command line argument R4R welcome in intellegence world. in following code: public class R4RSCJPTest { public static void main(String args[]) { System.out.println(args[0]+" "+args [args.length-1]); } }

What result comes when we compile and run(with command line argument like: R4R welcomes you in intelligence world) following code: public class test { public static void main(String args[]) { System.out.println(args[0]+" "+args.length); } }

What result comes when we compile and run following code: class R4RSCJPTest { public static void main(String args[]) { int i,j,k,l=0; k = l++; j = ++k; i = --j; System.out.println("Value of i is " +i); } }

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { char c; int i; c = 'A'; //1 i = c; //2 c = i + 1; //3 i++; //4 } }

Select correct signed of left shift operator.

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i = 1; boolean t = true; boolean f = false, boo; boo = (t && ((i++) == 0)); boo = (f && ((i+=2) > 0)); System.out.println("Value of i is " +i); } }

What result comes when we compile and run following code: public class R4RSCJPTest { public static void main(String args[]) { int i = 1; boolean t = true; boolean f = false, boo; boo = (t & ((i++) == 0)); boo = (f & ((i+=2) > 0)); System.out.println("Value of i is " +i); } }

Primitive Instance Variables

Object Reference Instance Variables

Array Instance Variables

Local Primitives

Local Objects

Local Arrays

Command-Line Arguments to Main

Declarations and Modifiers

Class Declarations and Modifiers

Class Access

Default Access

Public Access

Other (Nonaccess) Class Modifiers

Final Classes

Abstract Classes

Creating an Abstract Superclass and Concrete Subclass

Method and Variable Declarations and Modifiers.

Member Access

Public Members

Private Members

Local Variables and Access Modifiers

Nonaccess Member Modifiers

Final Methods

Final Arguments

R4R provides free online tutolrails ,examples for Freshers and experts .We cover core java, tutorials, spring, Hibernate, python, struts, struts 2,c language, spring boot,PHP,MYSQL,C#,ASP.NET,WPF,WCF,Photoshop , JSP, programming, example, Interview questions and answer