JDAY 0: word swapping, input / output, calculation of hypotenese, Random numbers

 package day1;

//import java.util.Scanner;

public class day1 {

public static void main(String[] args) {

String x= "hey";

String y= "what";

String z;

z=x;

x=y;

y=z;

System.out.println("my word is " +x);

System.out.println("my word is " +y );

}

}

Enter your name, age and get the your name and age as output

package day1;

import java.util.Scanner;

public class day1 {

public static void main(String[] args) {

Scanner sc= new Scanner(System.in);

System.out.println("your name is? ");

String name=sc.nextLine();

System.out.println("What is your age?");

int age = sc.nextInt();

System.out.println("my name is " +name );

System.out.println("my age is " +age );

}

}

using sc.nextLine(); to clear the /n stored in the box

package day1;

import java.util.Scanner;

public class day1 {

public static void main(String[] args) {

Scanner sc= new Scanner(System.in);

System.out.println("your name is? ");

String name=sc.nextLine();

System.out.println("What is your age?");

int age = sc.nextInt();

sc.nextLine();

System.out.println("What is your food?");

String food=sc.nextLine();

System.out.println("my name is " +name );

System.out.println("my age is " +age );

System.out.println("my food is " +food );

}

}

Calculation of hypotenuse:

package day1;

// import javax.swing.JOptionPane;

import java.util.Scanner;

// program to calculate the hypotenese of rt-triangle

public class day1 {

public static void main(String[] args) {

Scanner sc= new Scanner(System.in);

System.out.println("What is the perpendicular? " );

double p=sc.nextDouble();

System.out.println("What is the base? " );

double b=sc.nextDouble();

double h= Math.sqrt(p*p + b*b);

System.out.println("The hypo is: " +h);

            }

}

Random number:// rolling a dice

package day1;

import java.util.Random;

import java.util.Scanner;

// program to calculate the hypotenese of rt-triangle

public class day1 {

public static void main(String[] args) {

Random r= new Random();

int x= r.nextInt(6)+ 1;

//boolean y= r.nextBoolean();

System.out.println("The random is: " +x);

}

}