GTU CSE

//file name--> Email.java import java.io.*; import java.util.*; class Email{ public static void main(String args[]) { Scanner input=new Scanner(System.in); String mail; boolean flag1=false,flag2=false; System.out.println("Enter Email Address:"); mail=input.next(); char emailid[]=mail.toCharArray(); char server[]=new char[15]; char id[]=new char[25]; int i=0,j=0; for(char temp: emailid){ if(temp=='@') flag1=true; if(flag1) { if(temp=='.') flag2=true; } if(!flag1) { id[i++]=temp; } else { if(temp!='@') server[j++]=temp; } } if(flag1 && flag2) { System.out.println("\nOutput:It is valid address."); System.out.print("Email id:"); for(char temp: id){ System.out.print(temp); } System.out.print("\nEmail server address:"); for(char temp: server){ System.out.print(temp); } }...

Matrix.java import java.util.*; class Matrix{ public static void main(String args[])throws Exception { Scanner s=new Scanner(System.in); int r1,r2,c1,c2; System.out.println("Enter row and column for matrix1:"); r1=s.nextInt(); c1=s.nextInt(); int[][] m1=new int[r1][c1]; System.out.println("Enter the elements of first matrix"); for(int i=0;i OUTPUT javac Matrix.java java Matrix Enter row and column for matrix1: 3 3 Enter the elements of first matrix 1 2 3 4 5 6 7 8 9 Enter row and column for matrix2: 3 3 Enter the elements of second matrix 9 8 7 6 5 4 3 2 1 multiplication of m1*m2 matrices -------------------------------- 30 24 18 84 69 54 138 114 90

//File name--> MinMax.java import java.io.*; class MinMax{ public static void main(String args[])throws Exception { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int n,min=0,max=0; System.out.println("Enter number of element you want in array."); n=Integer.parseInt(br.readLine()); int[] a=new int[n]; for(int i=0;i a[i]) min=a[i]; if(max OUTPUT javac MinMax.java java MinMax Enter number of element you want in array. 10 Enter elementa[0]: -5 Enter elementa[1]: 11 Enter elementa[2]: 88 Enter elementa[3]: 77 Enter elementa[4]: 66 Enter elementa[5]: 55 Enter elementa[6]: 44 Enter elementa[7]: 33 Enter elementa[8]: 22 Enter elementa[9]: 11 Content of Array: -5 11 88 77 66 55 44 33 22 11 Largest element from array is:88 Smallest element from array is:-5

//File name--> Armstrong.java import java.io.*; class Armstrong{ public static void main(String args[])throws Exception { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int no,temp,sum=0,rem=0; System.out.println("Enter number:"); no=temp=Integer.parseInt(br.readLine()); while(no>0) { rem=no%10; sum+=(rem*rem*rem); no/=10; } if(sum==temp) { System.out.println("given number "+temp+" is Armstrong number."); } else { System.out.println("given number "+temp+" is not Armstrong number."); } } } OUTPUT javac Armstrong.java java Armstrong Enter number: 123 given number 123 is not Armstrong number. java Armstrong Enter number: 153 given number 153 is Armstrong number. java Armstrong Enter number: 307 given number 307 is not Armstrong number. java Armstrong Enter number: 370 given number 370 is Armstrong number.

//File name-->SumOfDigit.java import java.io.*; class SumOfDigit{ public static void main(String args[])throws Exception { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int no,sum=0,temp; System.out.println("Enter number:"); no=temp=Integer.parseInt(br.readLine()); while(no>0) { sum+=(no%10); no=no/10; } System.out.println("Sum of Digit for number "+temp+" is:"+sum); } } OUTPUT javac SumOfDigit.java java SumOfDigit Enter number: 12345 Sum of Digit for number 12345 is:15

//File name--> Calculator.java import java.io.*; class Calculator{ public static void main(String args[])throws Exception { int n1,n2; String choice; BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Enter number1:"); n1=Integer.parseInt(br.readLine()); System.out.println("press \n + for addition \n - for subtraction \n * for multiplication \n / for division: "); choice=br.readLine(); System.out.println("Enter number2:"); n2=Integer.parseInt(br.readLine()); switch(choice) { case "+": System.out.println("Addition: "+n1+"+"+n2+" is:"+(n1+n2)); break; case "-": System.out.println("Subtraction:"+n1+"-"+n2+" is:"+(n1-n2)); break; case "*": System.out.println("Multiplication:"+n1+"*"+n2+" is:"+(n1*n2)); break; case "/...

//file name--> Fibonacci.java import java.io.*; class Fibonacci{ public static void main(String args[])throws Exception { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int p=0,c=1,n=p+c,num; System.out.println("Enter number of Series you want:"); num=Integer.parseInt(br.readLine()); for(int i=0;i OUTPUT javac Fibonacci.java java Fibonacci Enter number of Series you want: 10 0 1 1 2 3 5 8 13 21 34