Java - Important Code Note 1
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IP Address
import java.net.InetAddress;
InetAddress IP = InetAddress.getLocalHost();
System. out. println("IP of my system is := "+IP. getHostAddress());

Maths Equations
Math.pow(b,s)
Math.sqrt()
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Java - Important Code Note 2
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Reverse Number

public class ReverseNumber {
public static void main(String[] args) {

int num = 1234, reversed = 0;

while(num != 0) {
int digit = num % 10;
reversed = reversed * 10 + digit;
num /= 10;
}

System.out.println("Reversed Number: " + reversed);
}
}
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Java - Question & Answers
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Below we posted screen shot of the question to the solution code we are going to be posted.

Tip: u gave us 🙏🏽 Thanks!

Keep calm and wait for the upcoming java exercises.
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Question : 12 & 13

Question : 14 & 15

Using polymorphism system :
By overloading area() to all the equations
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Question : 18 & 19