LAB 6

Choong Kar Yee

182630

1. 

public class Q1 {
public static void main(String[] args) {

System.out.printf( "%6b", ( 1 > 2 ) );
System.out.printf( "%6s\n", "Java");
System.out.printf("Amount is %f %e", 32.32, 32.32);
System.out.printf("%8d%8.1f", 1234, 5.6321);
System.out.printf("%-8d%-8.1f", 1234, 5.6321);

}
}

2.

public class Q2 {
public static void main(String[] args) {

String s1 = "Welcome to Java";
String s2 = "Welcome to Java";
String s3 = new String("Welcome to Java");
System.out.println( s1 == s2);
System.out.println( s1 == s3);

}
}

3.

import java.util.Scanner;
public class Q3 {
public static void main(String[] args) {
Scanner input= new Scanner(System.in);
System.out.print("Enter 2 name,sister1:");
String sister1= input.nextLine();
System.out.print("sister2:");
String sister2= input.nextLine();

if (sister1.compareTo(sister2)<0)
{
System.out.println("sister1 is smaller than sister2");
}
else if (sister1.compareTo(sister2)>0)
{
System.out.println("sister1 is greater than sister2");
}
else
{
System.out.println("They are same age!");
}
}
}

4.

public class Q4 {
public static void main(String[] args) {
int number=(int)(Math.random()* 10 +'a');
System.out.println((char)(number));

}
}

5.

import java.util.Scanner;

public class Q5 {

public static void main(String[] args) {

Scanner input= new Scanner(System.in);

System.out.print("Enter a character:");

char E =input.next().charAt(0);

int ASCII =(int)E;

System.out.println("The ASCII code for character" + E + "is" + ASCII);

}

}

6.

import java.util.Scanner;

public class Q61 {

public static final int PASSWORD_LENGTH = 8;

public static void main(String[] args) {

Scanner input= new Scanner(System.in);

System.out.print("A password must have at least eight characters.\n" +

"A password consists of only letters and digits.\n" +

"A password must contain at least two digits.");

System.out.print("Enterpassword");

String password= input.nextLine();

        if (isValid(password)) {

            System.out.println("Valid Password");

        } else {

            System.out.println("Invalid Password");

        }

    }

    public static boolean isValid(String password) {

        if (password.length() < 8) { 

            return false;

        } else {    

            char c;

            int count = 1; 

            for (int i = 0; i < password.length() - 1; i++) {

                c = password.charAt(i);

                if (!Character.isLetterOrDigit(c)) {        

                    return false;

                } else if (Character.isDigit(c)) {

                    count++;

                    if (count < 2)   {   

                        return false;

                    }   

                }

            }

        }

        return true;

    }

}