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Java Programming Assignment 2
-Sanskriti Krishna Shrivastava 4 th June 2022
1.What is the difference between float
and double?
Float Double
This is generally
used for graphic
based libraries for
making the
processing power of
your programs
faster, as it is
simpler to manage
by compilers.
This is the most
commonly used data
type in programming
languages for
assigning values
having a real or
decimal based
number within, such
as 3.14 f
It has single
precision.
It has the double
precision or you can
say two times more
precision than float.
According to IEEE, it
has a 32-bit floating
point precision.
According to IEEE, it
has a 64-bit floating
point precision.
Float takes 4 bytes
for storage.
Double takes 8 bytes
for storage.
A value having a
range within 1.2E-
to 3.4E+38 can be
assigned to float
A value having range
within 2.3E-308 to
1.7E+308 can be
assigned to double
variables. type variables
Has a precision of 6
decimal places.
Has a precision of 15
decimal places.
2.WAP to input two numbers and
print their addition.
class Main {
public static void main(String[] args) {
System.out.println("Enter two numbers");
int first = 10;
int second = 20;
System.out.println(first + " " + second);
// add two numbers
int sum = first + second;
System.out.println("The sum is: " + sum);
public class FindProduct{
public static void main(String args[])
int num1=12,num2=15;
int mul=num1*num
System.out.println("Product of
"+num1+" and "+num2+":"+mul);
5) WAP to input a number and
print it's square.
import java.util.Scanner;
* @author H2O
public class Code4Example {
* @param args the command line
arguments
public static void main(String[]
args) {
int num, square;
Scanner keyboard = new
Scanner(System.in);
System.out.print("Enter a
number to calculate square=");
num = keyboard.nextInt();
square = num * num;
System.out.print("Square = " +
square);
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storage. 8 Compilers more often take a large amount of time for analyzing the source code. In comparison, Interpreters take less time for analyzing the source code. 9 C, C++, C#, etc are programming languages that are compiler based. Python, Ruby, Perl, SNOBOL, MATLAB, etc are programming languages that are interpreter based. **1 0
- Which one is better? Compiler or interpreter?**
- The main advantage is that the code produced by a compiler works faster than the code generated by an interpreter. Compiler produces optimized code for a given processor and this code usually consumes far less resources than the code of an interpreter. 3) What are the different data types in java? - Object Program Compiler Source ptogram program^ Source^ Intermediate code Interpreter
Data Type Default Value Default size boolean false 1 bit char '\u0000' 2 byte byte 0 1 byte short 0 2 byte int 0 4 byte long 0L 8 byte float 0.0f 4 byte double 0.0d 8 byte 4) What are the different keywords in java?
- Here is a list of keywords in the Java programming language. You cannot use any of the following as identifiers in your programs. The keywords const and goto are reserved, even though they are not currently used. true, false, and null might seem like keywords, but they are actually literals; you cannot use them as identifiers in your programs. Abstract continuefor new switch assert*** default goto* package synchronized boolean do if private this break double implements protected throw
For many hardware and software platforms, JVMs are available (i.e. JVM depends on the platform). JVM is the Java Virtual Machine – it actually executes Java ByteCode. JRE is the Java Runtime Environment – it contains a JVM, among other things, and is what you need to run a Java program. JDK is the Java Development Kit – it is the JRE, but with javac (which is what you need to compile Java source code) and has other programming tools added.
