Jai solanki Online Test

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Jai solanki

Description: Ssc
Number of Questions: 37
Created by: Sunita singh
Tags: Ch 1

Overriding and Overloading is for ?

Methods and variables
class
variables
Methods

Overriding and Overloading is for ?

Methods and variables
class
variables
Methods

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

class, if, void, long, Int, continue
goto, instanceof, native, finally, default, throws
try, virtual, throw, final, volatile, transient
strictfp, constant, super, implements, do

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

class, if, void, long, Int, continue
goto, instanceof, native, finally, default, throws
try, virtual, throw, final, volatile, transient
strictfp, constant, super, implements, do

Which will legally declare, construct, and initialize an array?

int [] myList = {"1", "2", "3"};
int [] myList = (5, 8, 2);
int myList [] [] = {4,9,7,0};
int myList [] = {4, 3, 7};

Which will legally declare, construct, and initialize an array?

int [] myList = {"1", "2", "3"};
int [] myList = (5, 8, 2);
int myList [] [] = {4,9,7,0};
int myList [] = {4, 3, 7};

Which is a reserved word in the Java programming language?

method
native
subclasses
reference

Which is a reserved word in the Java programming language?

method
native
subclasses
reference

Which is a valid keyword in java?

interface
string
Float
unsigned

Which is a valid keyword in java?

interface
string
Float
unsigned

Which one of the following will declare an array and initialize it with five numbers?

Array a = new Array(5);
int [] a = {23,22,21,20,19};
int a [] = new int[5];
int [5] array;

Which one of the following will declare an array and initialize it with five numbers?

Array a = new Array(5);
int [] a = {23,22,21,20,19};
int a [] = new int[5];
int [5] array;

Which is the valid declarations within an interface definition?

public double methoda();
public final double methoda();
static void methoda(double d1);
protected void methoda(double d1);

Which is the valid declarations within an interface definition?

public double methoda();
public final double methoda();
static void methoda(double d1);
protected void methoda(double d1);

Which one is a valid declaration of a boolean?

boolean b1 = 0;
boolean b2 = 'false';
boolean b3 = false;
boolean b4 = Boolean.false();

Which one is a valid declaration of a boolean?

boolean b1 = 0;
boolean b2 = 'false';
boolean b3 = false;
boolean b4 = Boolean.false();

Which one is a valid declaration of a boolean?

boolean b1 = 0;
boolean b2 = 'false';
boolean b3 = false;
boolean b4 = Boolean.false();

Which is a valid declarations of a String?

String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';

Which is a valid declarations of a String?

String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';

Which is a valid declarations of a String?

String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';

Which is a valid declarations of a String?

String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';

Which is a valid declarations of a String?

String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';

What is the numerical range of a char?

-128 to 127
-(215) to (215) - 1
0 to 32767
0 to 65535

What is the numerical range of a char?

-128 to 127
-(215) to (215) - 1
0 to 32767
0 to 65535

What is the numerical range of a char?

-128 to 127
-(215) to (215) - 1
0 to 32767
0 to 65535

What is the numerical range of a char?

-128 to 127
-(215) to (215) - 1
0 to 32767
0 to 65535

You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?

public
protected
private
transient

You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?

public
protected
private
transient

What is the most restrictive access modifier that will allow members of one class to have access to members of another class in the same package?

public
abstract
protected
synchronized
default access

Which cause a compiler error?

int[ ] scores = {3, 5, 7};
int [ ][ ] scores = {2,7,6}, {9,3,45};
String cats[ ] = {"Fluffy", "Spot", "Zeus"};
boolean results[ ] = new boolean [] {true, false, true};

You want a class to have access to members of another class in the same package. Which is the most restrictive access that accomplishes this objective?

public
private
protected
default access

Which one creates an instance of an array?

int[ ] ia = new int[15];
float fa = new float[20];
char[ ] ca = "Some String";
int ia[ ] [ ] = { 4, 5, 6 }, { 1,2,3 };

Which of the following class level (nonlocal) variable declarations will not compile?

protected int a;
transient int b = 3;
private synchronized int e;
volatile int d;

Given a method in a protected class, what access modifier do you use to restrict access to that method to only the other members of the same class?

final
static
private
protected

Which is a valid declaration within an interface?

public static short stop = 23;
protected short stop = 23;
transient short stop = 23;
final void madness(short stop);

Suppose that you would like to create an instance of a new Map that has an iteration order that is the same as the iteration order of an existing instance of a Map. Which concrete implementation of the Map interface should be used for the new instance?

TreeMap
HashMap
LinkedHashMap
The answer depends on the implementation of the existing instance.

Which class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

java.lang.String
java.lang.Double
java.lang.StringBuffer
java.lang.Character

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