Mengubah Double jadi String

Codenya

public class DoubleToString {
   public static void main(String[] args) {
       
       /* Method 1: using valueOf() method
        * of String class
        */
       double dvar = 101.11;
       String str = String.valueOf(dvar);
       System.out.println("String is: "+str);
       
       /* Method 2: using toString() method
        * of Double class
        */
       double dvar2 = 200.202;
       String str2 = Double.toString(dvar2);
       System.out.println("String2 is: "+str2);
   }
}

Hasilnya:

Mencari Nilai Terkecil dari Dua Angka

Codenya

public class FindMinimumOfTwoNumbersExample {

  public static void main(String[] args) {
 
 
    System.out.println(Math.min(34,45));
 
   
     System.out.println(Math.min(43.34f, 23.34f));

   
     System.out.println(Math.min(4324.334, 3987.342));
 
     System.out.println(Math.min(48092840,4230843));
  }
}

Hasilnya

Menghitung Luas Persegi

Codenya:

import java.util.Scanner;
class SquareAreaDemo {
   public static void main (String[] args)
   {
       System.out.println("Enter Side of Square:");
       //Capture the user's input
       Scanner scanner = new Scanner(System.in);
       //Storing the captured value in a variable
       double side = scanner.nextDouble();
       //Area of Square = side*side
       double area = side*side;
       System.out.println("Area of Square is: "+area);
   }
}

hasilnya:

Luas Segitiga

Codenya:

import java.util.Scanner;
class AreaTriangleDemo {
   public static void main(String args[]) {  
      Scanner scanner = new Scanner(System.in);

      System.out.println("Enter the width of the Triangle:");
      double base = scanner.nextDouble();

      System.out.println("Enter the height of the Triangle:");
      double height = scanner.nextDouble();

      //Area = (width*height)/2
      double area = (base* height)/2;
      System.out.println("Area of Triangle is: " + area);    
   }
}

Hasilnya:

Cek Bilangan Prima

Codenya;

import java.util.Scanner;
class PrimeCheck
{
   public static void main(String args[])
   {
int temp;
boolean isPrime=true;
Scanner scan= new Scanner(System.in);
System.out.println("Enter a number for check:");
//capture the input in an integer
int num=scan.nextInt();
for(int i=2;i<=num/2;i++)
{
           temp=num%i;
  if(temp==0)
  {
     isPrime=false;
     break;
  }
}
//If isPrime is true then the number is prime else not
if(isPrime)
  System.out.println(num + " is Prime Number");
else
  System.out.println(num + " is not Prime Number");
   }
}

Hasilnya:

Menemukan Kuadrat suatu angka

Codenya

public class FindPowerExample {

  public static void main(String[] args) {
 
   
     System.out.println(Math.pow(2,2));
 
   
     System.out.println(Math.pow(-3,2));
  }
}

hasilnya:

Luas dan Keliling Lingkaran

import java.util.Scanner;
class CircleDemo
{
   static Scanner sc = new Scanner(System.in);
   public static void main(String args[])
   {
      System.out.print("Enter the radius: ");
      /*We are storing the entered radius in double
       * because a user can enter radius in decimals
       */
      double radius = sc.nextDouble();
      //Area = PI*radius*radius
      double area = Math.PI * (radius * radius);
      System.out.println("The area of circle is: " + area);
      //Circumference = 2*PI*radius
      double circumference= Math.PI * 2*radius;
      System.out.println( "The circumference of the circle is:"+circumference) ;
   }
}

hasilnya: