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public class hello1
{
public static void main(String args[])
{
System.out.println(100+100+"BCA Sem4");
System.out.println("BCA Sem5"+100+100);
}
}
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public class Asciivalue{
public static void main(String args[]) {
char ch = 'a';
int ascii = ch;
System.out.println("Value" + ch + "is" + ascii);
}
}
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import java.util.*;
class Sum2{
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
int x,y,z;
System.out.println("First no.");
x = in.nextInt();
System.out.println("Second no.");
y = in.nextInt();
z = x + y;
System.out.println("Sum ="+z);
}
}
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import java.io.*;
class addition1
{
public static void main(String args[])throws IOException
{
int x,y,z;
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
System.out.println("Enter the two numbers");
x = Integer.parseInt(in.readLine());
y = Integer.parseInt(in.readLine());
z = x + y;
System.out.println("the sum of two numbers are " +z);
}
}
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import java.util.Stack;
class stack{
public static void main(String args[])
{
Stack<String> stack1 = new Stack<> ();
stack1.push("hii");
stack1.push("hii hii");
stack1.push("hii hii hii");
System.out.println("Stack" + stack1);
}
}
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import java.util.Vector;
public class vectordemo {
public static void main(String args[]) {
Vector<Object> v = new Vector<>();
int n = 10;
Integer y = new Integer(20);
String str = "Sa";
v.add(n);
v.add(y);
v.add(str);
v.removeElementAt(1);
v.add(2, new Integer(30));
System.out.println("Vector contents: " + v);
}
}
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public class Main{
public static void main(String args[])
{
String greet = "Hello! World";
System.out.println("String:"+ greet);
int length = greet.length();
System.out.println("Length:" + length);
}
}
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public class destructoreg{
public static void main(String args[])
{
destructoreg de = new destructoreg();
de = null;
System.gc();
System.out.println("Inside the main() method");
}
protected void finalize()throws Throwable
{
System.out.println("Object destroyed by garbage collector");
super.finalize();
}
}
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public class simpleinterest
{
public static void main(String args[])
{
float p,r,t,si;
p = 13000;
r = 12;
t = 2;
si = (p * r * t)/100;
System.out.println("Simple Interest is: " + si);
}
}
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import java.util.Scanner;
public class prime
{
public static void main(String args[])
{
int i, m = 0, a = 0;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number to be checked");
int n = sc.nextInt();
m = n/2;
if (n == 0||n == 1)
{
System.out.println(n +"is not prime number");
} else
{
for(i = 2; i < m; i++)
{
if(n % i == 0)
{
System.out.println(n+ "is not prime number");
a =1;
break;
}
}
if (a == 0)
{
System.out.println(n+ "is prime number");
sc.close();
}
}
}
}
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public class limitprime
{
public static void main(String[] args)
{
int i = 0;
int num = 0;
String primeNumbers ="";
for (i = 1; i <= 50; i++)
{
int counter = 0;
for (num = i; num >= 1; num--)
{
if (i % num == 0)
{
counter = counter + 1;
}
}
if (counter == 2)
{
primeNumbers = primeNumbers + i + " ";
}
}
System.out.println("Prime numbers from 1 to 50 are:");
System.out.println(primeNumbers);
}
}
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public class fibo
{
public static void main(String args[])
{
int n1 = 0, n2 = 1, n3,i ,count = 10;
System.out.println(n1 + " "+ n2);
for (i = 2; i < count; ++i)
{
n3 = n1 + n2;
System.out.println(" "+n3);
n1 = n2;
n2 = n3;
}
}
}
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import java.util.Arrays;
public class arraysort{
public static void main(String[] args) {
int[] array = {5, 3, 8, 1, 2, 7, 4, 6};
System.out.println("Original array:");
for (int num : array) {
System.out.print(num + " ");
}
System.out.println();
Arrays.sort(array);
System.out.println("Sorted array:");
for (int num : array) {
System.out.print(num + " ");
}
System.out.println();
}
}
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public class MatrixSum
{
public static void main(String[] args)
{
int[][] matrix1 = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
int[][] matrix2 = {
{9, 8, 7},
{6, 5, 4},
{3, 2, 1}
};
int[][] sumMatrix = new int[3][3];
for (int i = 0; i < matrix1.length; i++) {
for (int j = 0; j < matrix1[i].length; j++) {
sumMatrix[i][j] = matrix1[i][j] + matrix2[i][j];
}
}
System.out.println("Matrix 1:");
displayMatrix(matrix1);
System.out.println("Matrix 2:");
displayMatrix(matrix2);
System.out.println("Sum Matrix:");
displayMatrix(sumMatrix);
}
public static void displayMatrix(int[][] matrix) {
for (int[] row : matrix) {
for (int elem : row) {
System.out.print(elem + " ");
}
System.out.println();
}
}
}
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import java.util.Scanner;
public class HarmonicSeriesSum {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter the value of n: ");
int n = scanner.nextInt();
double harmonicSum = 0.0;
for (int i = 1; i <= n; i++) {
harmonicSum += 1.0 / i;
}
System.out.println("The sum of the harmonic series for n = " + n + " is: " + harmonicSum);
}
}
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public class IncrementCounter {
private static int counter = 0;
public static void main(String[] args) {
Thread incrementThread1 = new Thread(new IncrementTask());
Thread incrementThread2 = new Thread(new IncrementTask());
incrementThread1.start();
incrementThread2.start();
try {
incrementThread1.join();
incrementThread2.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("Final Counter Value: " + counter);
}
static class IncrementTask implements Runnable {
@Override
public void run() {
for (int i = 0; i < 1000; i++) {
synchronized (IncrementCounter.class) {
counter++;
}
}
}
}
}
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class Employee {
private String name;
private double baseSalary;
public Employee(String name, double baseSalary) {
this.name = name;
this.baseSalary = baseSalary;
}
public double calculateSalary() {
return baseSalary;
}
public String getName() {
return name;
}
}
class Manager extends Employee {
private double bonus;
public Manager(String name, double baseSalary, double bonus) {
super(name, baseSalary);
this.bonus = bonus;
}
@Override
public double calculateSalary() {
return super.calculateSalary() + bonus;
}
}
class Programmer extends Employee {
private int bonusPerProject;
private int numProjects;
public Programmer(String name, double baseSalary, int bonusPerProject, int numProjects) {
super(name, baseSalary);
this.bonusPerProject = bonusPerProject;
this.numProjects = numProjects;
}
@Override
public double calculateSalary() {
return super.calculateSalary() + (bonusPerProject * numProjects);
}
public static void main(String[] args) {
Manager manager = new Manager("John", 50000, 10000);
Programmer programmer = new Programmer("Alice", 60000, 2000, 5);
System.out.println("Manager Salary: " + manager.calculateSalary());
System.out.println("Programmer Salary: " + programmer.calculateSalary());
}
}
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import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Color;
public class ConcentricCirclesApplet extends Applet {
@Override
public void paint(Graphics g) {
int width = getWidth();
int height = getHeight();
int centerX = width / 2;
int centerY = height / 2;
int maxRadius = Math.min(width, height) / 2;
int numberOfCircles = 10;
// Draw concentric circles
for (int i = 0; i < numberOfCircles; i++) {
int radius = maxRadius * (numberOfCircles - i) / numberOfCircles;
int diameter = 2 * radius;
g.setColor(new Color(i * 255 / numberOfCircles, 0, 255 - i * 255 / numberOfCircles));
g.drawOval(centerX - radius, centerY - radius, diameter, diameter);
}
}
}
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<!DOCTYPE html>
<html>
<body>
<applet code="ConcentricCirclesApplet.class" width="500" height="500">
</applet>
</body>
</html>
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