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(#M40167128) JAVA QUESTION Exceptions Keep an EYE Keep an eye puzzle Keep an eye puzzle

Exception is an abnormal event or error that occurs during ________

A. Runtime
B. Compile time
C. any time - unpredictable
D. Any of these options

Asked In Java Jax (1 year ago)
Unsolved Read Solution (1)
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(#M40167127) JAVA QUESTION Checked vs Unchecked exceptions Keep an EYE Keep an eye puzzle Keep an eye puzzle

Which exceptions should be explicitly handled or properly propagated?

A. Unchecked exceptions
B. Checked exceptions
C. Errors
C. None of the above

Asked In Java Jax (1 year ago)
Unsolved Read Solution (1)
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(#M40167126) JAVA QUESTION static import Keep an EYE Keep an eye puzzle Keep an eye puzzle

Identify the correct options from the classes provided below.
More than one may be correct.

A. import static edu.ABC.model.Account.*;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

B. import static edu.ABC.model.Account ;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

C. import edu.ABC.model.Account ;
public class Loan {
public double getInterest() {
return Account.INTEREST_RATE;
}
}

D. package edu.ABC.model;
public class Loan {
public double getInterest() {
return INTEREST_RATE;
}
}

Asked In Java Jax (1 year ago)
Unsolved
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(#M40167125) JAVA QUESTION String objects Keep an EYE Keep an eye puzzle Keep an eye puzzle

What is special about string objects as compared to objects of other derived types?(More than 1 may be correct)

A. Java provides string constant pool to store the string objects
B. You can concatenate two string objects using ‘+’
C. You can create string objects without or without using new operator

Asked In Java Jax (1 year ago)
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(#M40167124) JAVA QUESTION Is array column size mandatory? Keep an EYE Keep an eye puzzle Keep an eye puzzle

Column size is mandatory to create an array in java. State true or false

Asked In Java Jax (1 year ago)
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(#M40167123) JAVA QUESTION StringBuilder vs StringBuffer Keep an EYE Keep an eye puzzle Keep an eye puzzle

class MyLogger
{
private StringBuilder logger = new StringBuilder();
public void log(String message, String user)
{
logger.append(message);
logger.append(user);
}
}

The programmer must guarantee that a single MyLogger object works properly for a multi threaded system. How must this code be changed to be thread-safe?

A. Replace StringBuilder with StringBuffer

B. Replace StringBuilder with just a String object and use the string concatenation (+=) within the log method.

C. No change is necessary, the current MyLogger code is already thread-safe.

D. Synchronize the log method

Asked In Java Jax (1 year ago)
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(#M40167122) JAVA QUESTION Output Keep an EYE Keep an eye puzzle Keep an eye puzzle

What is the output of the following program?

import java.util.regex.*;

class Test
{
public static void main(String args[])
{
Pattern p = Pattern.compile(".ech");
Matcher m = p.matcher("tech");
boolean b = m.matches();
System.out.println(b);
}
}

A. true
B. false
C. Compilation Error
D. Runtime Error

Asked In Java Jax (1 year ago)
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(#M40167121) JAVA QUESTION StringBuilder vs StringBuffer Keep an EYE Keep an eye puzzle Keep an eye puzzle

StringBuilder is less efficient and slower than StringBuffer. State true or false.

Asked In Java Jax (1 year ago)
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(#M40167120) JAVA QUESTION Matcher class Keep an EYE Keep an eye puzzle Keep an eye puzzle

Consider the below statements.

Statement 1 : Matcher class interprets the pattern in a String

Statement 2 : Matcher class matches the regular expression against the text provided

Which of the following is true?

A. Statement 2 alone is correct.
B. Both Statement 1 and 2 are incorrect.
C. Statement 1 alone is correct.
D. Both Statement 1 and 2 are correct

Asked In Java Jax (1 year ago)
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(#M40167119) JAVA QUESTION equals() vs == based question Keep an EYE Keep an eye puzzle Keep an eye puzzle

What is the output of the following program?

import java.util.Arrays;

class Test
{
public static void main(String args[])
{
String[] cities = new String[]{"London", "Paris", "NewYork", "HongKong", "Tokyo"};
String[] metros = new String[]{"London", "Paris", "NewYork", "HongKong", "Tokyo"};
String[] capitals = cities;
System.out.println("cities == metros : " + (cities == metros));
System.out.println("cities == capitals : " + (cities == capitals));
System.out.println("cities.equals(metros) : " + cities.equals(metros));
System.out.println("cities.equals(capitals) : " + cities.equals(capitals));
System.out.println("Arrays.equals(cities, metros) : " + Arrays.equals(cities, metros));
System.out.println("Arrays.equals(cities, capitals) : " + Arrays.equals(cities, capitals));
}
}


A. cities == metros : false
cities == capitals : true
cities.equals(metros) : true
cities.equals(capitals) : true
Arrays.equals(cities, metros) : false
Arrays.equals(cities, capitals) : true

B. cities == metros : false
cities == capitals : true
cities.equals(metros) : true
cities.equals(capitals) : true
Arrays.equals(cities, metros) : true
Arrays.equals(cities, capitals) : true

C. cities == metros : false
cities == capitals : true
cities.equals(metros) : false
cities.equals(capitals) : true
Arrays.equals(cities, metros) : true
Arrays.equals(cities, capitals) : true

D. cities == metros : false
cities == capitals : true
cities.equals(metros) : false
cities.equals(capitals) : true
Arrays.equals(cities, metros) : true
Arrays.equals(cities, capitals) : false

Asked In Java Jax (1 year ago)
Unsolved
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Solved Question (6040) UnSolved Question (153931)
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Time: 00:01:33
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Maths Quotes

Mathematics is written for mathematicians.

Nicolaus Copernicus

A MAN IS LIKE A FRACTION WHOSE NUMERATOR IS WHAT HE IS AND WHOSE DENOMINATOR IS WHAT HE THINK ABOUT HIMSELF LARGER THE DENOMINATOR SMALLER THE FRACTION

UNKNOWN

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