gs gs128 Java Data Types Variables Arrays - Java BigDecimal - Quiz No.1
gs gs128 Java Quiz
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Question 1: Which of the following is the advantage of BigDecimal over double?
Syntax
Memory usage
Garbage creation
Precision
Question 2: Which of the below data type doesn’t support overloaded methods for +,-,* and /?
int
float
double
BigDecimal
Question 3: What will be the output of the following Java code snippet?
double a = 0.02; double b = 0.03; double c = b - a; System.out.println(c); BigDecimal _a = new BigDecimal("0.02"); BigDecimal _b = new BigDecimal("0.03"); BigDecimal _c = b.subtract(_a); System.out.println(_c); 0.009999999999999998 0.01 0.01 0.009999999999999998 0.01 0.01 0.009999999999999998 0.009999999999999998
Question 4: What is the base of BigDecimal data type?
Base 2
Base 8
Base 10
Base e
Question 5: What is the limitation of toString() method of BigDecimal?
There is no limitation
toString returns null
toString returns the number in expanded form
toString uses scientific notation
Question 6: Which of the following is not provided by BigDecimal?
scale manipulation
+ operator
rounding
hashing
Question 7: BigDecimal is a part of which package?
java.lang
java.math
java.util
java.io
Question 8: What is BigDecimal.ONE?
wrong statement
custom defined statement
static variable with value 1 on scale 10
static variable with value 1 on scale 0
Question 9: Which class is a library of functions to perform arithmetic operations of BigInteger and BigDecimal?
MathContext
MathLib
BigLib
BigContext
Question 10: What will be the output of the following Java code snippet?
public class AddDemo { public static void main(String args[]) { BigDecimal b = new BigDecimal("23.43"); BigDecimal br = new BigDecimal("24"); BigDecimal bres = b.add(new BigDecimal("450.23")); System.out.println("Add: "+bres); MathContext mc = new MathContext(2, RoundingMode.DOWN); BigDecimal bdecMath = b.add(new BigDecimal("450.23"), mc); System.out.println("Add using MathContext: "+bdecMath); } }
Compilation failure
Add: 473.66 Add using MathContext: 4.7E+2Add 4.7E+2 Add using MathContext: 473.66
Runtime exception
