SLT - Java Programs.txt

1. Write a program using array to accept 10 numbers and display the numbers in ascending order.
--Program :

import java.util.Scanner;
public class Ascend 
{
int[] numbers;
private int min;
public void accept()
{
numbers = new int[10];
Scanner input;
System.out.println("Enter the Integers");					
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
numbers[i]= input.nextInt();
}
}
public void execute()
{
for(int i = 0; i<10 ; i++)
{								
for(int j = 0 ; j < 9 ; j++)
{
if (numbers [j] > numbers [j+1])
{
min = numbers [j];
numbers [j] = numbers [j+1];
numbers [j+1] = min;
}
}
}
}	
public void print()
{
for(int i = 0; i < 10 ; i++)
{
System.out.println(" "+numbers [i]);
}
}
public static void main(String[] args)
{
Ascend object = new Ascend();
object.accept();
object.execute();
object.print();
}
}
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2. Write a program to accept 10 numbers using array and display the sum and average of 10 numbers.
--Program :

import java.util.Scanner;
public class Sum_Avg 
{
int[] numbers;
int sum=0;
int average=0;
public void accept()
{
numbers = new int[10];
Scanner input;
System.out.println("Enter the numbers");
						
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
numbers[i]= input.nextInt();
}
}
		
public void execute()
{
for(int i = 0; i<10 ; i++)
{
sum = sum+ numbers[i];	
}
average = sum/numbers.length;
}
		
public void print()
{
System.out.println("The sum of the given numbers are : "+sum);
System.out.println("The average of the given numbers are : "+average);
}

public static void main(String[] args) 
{
Sum_Avg obj = new Sum_Avg();
obj.accept();
obj.execute();
obj.print();
}
}
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3. Write a program to accept mark of 10 students using array and display the name of the highest scorer.
--Program :

import java.util.Scanner;
public class High_Scorer
{
String[][] database = new String[2][10];
int[] array = new int[10];
public int temp = 0;
public int highest = 0;
public void acceptStudName()
{
Scanner input;
System.out.println("Enter the names of the students : ");	
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
database[0][i]= input.next();
}
}
public void acceptStudMark()
{
Scanner input;
System.out.println("Enter the marks of the students in the same order of previously given names : ");	
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
database[1][i]= input.next();
array[i] = Integer.parseInt(database[1][i]);
}
}
public void higestMark()
{	
for(int i = 0; i <= 9 ; i++)
{
if(array[i] > highest)
{  
temp = i;
highest = array [i];
}				
}
}	
public void topper()
{
System.out.println(database[0][temp]+" scored the highest mark ");
System.out.println("His mark was "+database[1][temp]);
}
public static void main(String[] args) 
{
High_Scorer obj = new High_Scorer();
obj.acceptStudName();
obj.acceptStudMark();
obj.higestMark();
obj.topper();
}
}
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4. Write a java program to accept name and salary of 5 employee 
    (1) Display employee of highest salary.
    (2) Display employee lowest paid.
    (3) Display average salary of employee.
--Program :

import java.util.Scanner;
public class Salary_Details
{
String[][] database = new String[2][10];
int[] array = new int[10];
int temp = 0;
int temp1 = 0;
int highestSal = 0;
int lowestSal = 0;
public void acceptEmpName()
{
Scanner input;
System.out.println("Enter the names of the employees");	
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
database[0][i]= input.next();
}
}
public void acceptEmpSal()
{
Scanner input;
System.out.println("Enter the salaries of the employees in the same order as names you entered before : ");	
for(int i = 0 ; i <= 9 ; i++)
{
input = new Scanner(System.in);
database[1][i]= input.next();
array[i] = Integer.parseInt(database[1][i]);
}
}
public void highestSal()
{	
for(int i = 0; i <= 9 ; i++)
{
if(array[i] > highestSal)
{  
temp = i;
highestSal = array [i];
}				
}
}	
public void lowestSal()
{	
for(int i = 0; i <= 9 ; i++)
{
if(array[i] < highestSal)
{  
temp1 = i;
lowestSal = array [i];
}				
}
}
public void AvgSal()
{
System.out.println(database[0][temp]+" gets the highest salary");
System.out.println("His salary is "+database[1][temp]);
System.out.println(" ");
System.out.println(database[0][temp1]+" gets the lowest salary");
System.out.println("His salary is "+database[1][temp1]);		
}
public static void main(String[] args) 
{
Salary_Details obj = new Salary_Details();
obj.acceptEmpName();
obj.acceptEmpSal();
obj.highestSal();
obj.AvgSal();
}
}
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5. Write a java program to display matrix of 3 rows and 3 columns.
--Program :

import java.util.Scanner;
public class MatrixDisplay
{
int i,j;
System.out.println("Enter the number of rows and columns : ");
Scanner s = new Scanner(System.in);
int row = s.nextInt();
int column = s.nextInt();
public int[][] matrix1 = new int[3][3];
public int[][] matrix2 = new int[3][3];	
public void accept()
{
Scanner input;
System.out.println("Enter the elements for the first matrix:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
input = new Scanner(System.in);
matrix1[i][j]= input.nextInt();
}
}			
System.out.println("Enter the elements for the second matrix:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
input = new Scanner(System.in);
matrix2[i][j]= input.nextInt();
}
}
}	
public void display()
{
System.out.println("the first matrix:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
System.out.println(matrix1[i][j]+" ");
}
System.out.println();
}			
System.out.println("the second matrix:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
System.out.println(matrix2[i][j]);
}
System.out.println(" ");
}
}	
public static void main(String[] args) 
{
MatrixDisplay obj = new MatrixDisplay();
obj.accept();
obj.display();
}
}
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6. Write a java program to add 2 matrics of 3 rows and 3 columns.
--Program :

import java.util.Scanner;
public class Matrix_Add
{
int i,j;
Scanner s = new Scanner(System.in);
int row = s.nextInt();
int column = s.nextInt();
public int[][] matrixAdd = new int[3][3];
public int[][] matrix1 = new int[3][3];
public int[][] matrix2 = new int[3][3];	
public void addaccept()
{
Scanner input;
System.out.println("Enter the elements for the first matrix:");
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
input = new Scanner(System.in);
matrix1[i][j]= input.nextInt();
}
System.out.println("Enter the elements for the second matrix:");
matrixAdd[i][j] = matrix1[i][j] + matrix2[i][j];
}
}
public void addDisplay()
{
System.out.println("the sum of the matrices:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
System.out.println(matrixAdd[i][j]+"\t");
}
System.out.println(" ");
}
}	
public static void main(String[] args)
{
Matrix_Add obj = new Matrix_Add();
//obj.display();
obj.addaccept();
obj.addDisplay();
}
}
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7. Write a java program to do product of 2 matrix of 3 rows and 3 columns.
--Program :

import java.util.Scanner;
public class MatrixMul 
{
int i,j;
Scanner s = new Scanner(System.in);
int row = s.nextInt();
int column = s.nextInt();
public int[][] matrix1 = new int[3][3];
public int[][] matrix2 = new int[3][3];	
public int[][] MatrixMul = new int[3][3];
public void MulMat()
{
Scanner input;
System.out.println("Enter the elements for the first matrix:");
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
input = new Scanner(System.in);
matrix1[i][j]= input.nextInt();
}
System.out.println("Enter the elements for the second matrix:");
MatrixMul[i][j] = MatrixMul[i][j] + (matrix1[i][k] * matrix2[k][j]);		
}
}
public void MulDisplay()
{
Scanner input;
System.out.println("the product of the matrices:");	
for(int i = 0 ; i <= 2 ; i++)
{
for(int j = 0 ; j <= 2 ; j++ )
{
System.out.println(MatrixMul[i][j]);
}
System.out.println(" ");
}
}
public static void main(String[] args)
{
MatrixMul obj = new MatrixMul();
//obj.display();
obj.MulMat();
obj.MulDisplay();
}
}
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8. Write a program in java to create user defined exception which will allow user to perform bank transaction.
1. if user try to withdraw amount > balance program must throw insufficient fund exception
2. before withdraw or deposit user must enter pin, if pin is not valid then program must throw invalid pin exception
3. user cannot deposit > Rs.200000 without pan details are not provided program must raise exception saying invalid transaction.
--Program :

package userTransaction;

public class userAmtException extends Exception 
{
public userAmtException(String message)
{
super (message);
}	
}
____________________________________________

package AccountHandle;

import java.util.Scanner;
public class BankTransaction
{
public Scanner scanner;
public int i=0;
public int amount;
public int Display()
{
System.out.println("What would you like to do?");
System.out.println("1. --> Withdraw");
System.out.println("2. --> Deposit");
System.out.println("Please press 1 or 2");
scanner = new Scanner(System.in);
int selection = scanner.nextInt();
return selection;
}
public void Withdraw() throws Exception
{
System.out.println("Please enter your four Digit pin number:");
try
{
int PIN = scanner.nextInt();
checkPin(PIN);
}
catch(Exception e)
{
System.out.println("Please check the PIN number you have typed.");
}
System.out.println("Please enter the amount you wish to withdraw");
amount = scanner.nextInt();
if(amount<=76000)
{
System.out.println("Please collect your cash");
}
else
{	
throw new UserAmtException("Invalid entry");
}			
}	
public void Deposit() throws Exception
{
System.out.println("Please enter your four Digit pin number:");
try
{
int PIN = scanner.nextInt();
checkPin(PIN);
}
catch(Exception e)
{
System.out.println("Please check the PIN number you have typed.");
}
System.out.println("Please enter the amount you wish to deposit");
amount = scanner.nextInt();
if(amount>200000)
{
System.out.println("Please enter your pan card details");
String PAN = scanner.next();
//throw new UserAmtException("Transaction will be processed, only if the PAN number is valid");
checkDatabase(PAN);
}
System.out.println("Please place your cash for deposit");
}
public void checkDatabase(String data) throws UserAmtException
{
if(data=="AQJKS3456A")
{
return;
}
else
{	
throw new UserAmtException("Invalid entry");
}
}
public void checkPin(int code) throws Exception
{
try
{	
while(code!=0716)
{	
System.out.println("Please check the PIN number you have typed.");
code = scanner.nextInt();
i++;
if(i==3)
{	
System.out.println("Your Account has been blocked temporarily.");
System.exit(0);
}
}
if(code==0716)
{
return;
}
}
catch(Exception e)
{	
System.out.println("Please check the PIN number you have typed.");
}
}
public static void main(String[] args) throws Exception 
{
BankTransaction object = new BankTransaction();
int choice = object.Display();
if(choice == 1)
{
object.Withdraw();
}
if(choice == 2)
{
object.Deposit();
}
}
}
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9. Write a menu driven program for calculator using java language. Menu details are mentioned as : Addition, Subtraction, Multiplication, Division, 
     Percentage, Exit.
--Program :

import java.io.*;
public class calculator
{
int result = 0;
public int add(int num1, int num2)
{
result = num1+num2;
return result;
}
public int sub(int num1, int num2)
{
result = num1-num2;
return result;
}
public int mul(int num1, int num2)
{
result=num1*num2;
return result;
}
public int div(int num1, int num2)
{
result=num1/num2;
return result;
}
public int percent(int num1, int num2)
{
result=(num1+num2)/100;
return result;
}
public static void main(String[] aa)
{
int num1,num2,result;
num1=num2=result=0;
int choice;
Scanner sin = new Scanner(System.in);
calculator cobj=new calculator();
System.out.println("1.Addition");
System.out.println("2.Subtraction");
System.out.println("3.Multiplication");
System.out.println("4.Division");
System.out.println("5.Percentage");
System.out.println("6.Exit");
choice=sin.nextInt();
switch(choice)
{
case1:
result=cobj.add(num1,num2);
}
System.out.println("The result as per your choice", +result);
}
}
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10. Write a program in java to create user defined exception which will accept employee salary as input.
1. if salary is less than 0 display the message that you are not eligible for loan.
2. if salary is greater than 10000 display message that you are eligible for loan of 1000000.
3. if salary is greater is greater than 50000 display message thay you are eligible for loan of 500000.
4. if salary is greater than 100000 display message that you are eligible for loan of 1000000.
--Program :

package userDefinedException;

public class exceptionnew extends Exception
{
public exceptionnew(String message)
{
super (message);
}	
}
____________________________________________

package userDefinedException;

import java.io.*;
public class LoanEligible 
{	
static InputStreamReader is = new InputStreamReader(System.in);
static BufferedReader br = new BufferedReader(is);	
public static int salary;
public static int Display() throws Exception
{		
System.out.println("Enter your salary");
salary = Integer.parseInt(br.readLine());
return salary; 
}	
public static void validAge(int salary) throws exceptionnew
{	
if(salary >= 10000)
{
throw new exceptionnew("eligible for a loan of 1 lakh");
}
else if(salary >= 50000)
{
throw new exceptionnew("eligible for a loan of 5 lakhs");
}
else if(salary >= 100000)
{
throw new exceptionnew("eligible for a loan of 10 lakhs");
}
if(salary<10000)
{	
throw new exceptionnew("not eligible for loan");
}
}	
public static void main(String[] args) throws Exception
{
Display();
validAge(salary);
}
}
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11. Write a java program to accept a number of any digit and reverse the numbers : Ex : 6,5,4,3,2,1 to 1,2,3,4,5,6
--Program :
import java.util.Scanner;
public class ReverseNum
{
public void revnum()
{
int num;
int rev=0;
int rem;
Scanner sin=new Scanner(System.in);
System.out.println("Enter the number");
num = sin.nextInt();
while(num!=0)
{
rem=num%10;
rev=rev*10+rem;
num=num/10;
}
System.out.println("the number after reversing",+rev);
}
public static void main(String[]aa)
{
ReverseNum rnobj=new Reversenum();
rnobj.revnum();
}
}
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