Exp No:
Date :
Java Programming
Page No:
10.write a program for sort of an array
Program:
import java.util.Scanner;
class Sort {
public static void main(String []args) {
int n, c, d, swap;
Scanner in = new Scanner(System.in);
System.out.println("Input number of integers to sort");
n = in.nextInt();
int array[] = new int[n];
System.out.println("Enter " + n + " integers");
for (c = 0; c < n; c++)
array[c] = in.nextInt();
for (c = 0; c < ( n - 1 ); c++) {
for (d = 0; d < n - c - 1; d++) {
if (array[d] > array[d+1]) /* For descending order use < */
{
swap
= array[d];
array[d] = array[d+1];
array[d+1] = swap;
}
}
}
System.out.println("Sorted list of numbers");
}
}
for (c = 0; c < n; c++)
System.out.println(array[c]);
Output:sorted list:
Given names
aditya
engg
coll
Names in Asending order
aditya
coll
engg
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
11)Write a java program that checks whether a given string is a palindrome or not.
Program:
import java.util.*;
public class Palan
{
public static void main(String a[])
{
System.out.println("Enter any string");
String s=new Scanner(System.in).next();
for(int i=0,j=s.length()-1;i<=j;i++,j--)
{
if(s.charAt(i)==s.charAt(j));
else
{
System.out.println("Not Palindrome");
System.exit(1);
}
}
System.out.println("Palindrome");
}
}
Output:
Enter any string: amma
palindrome
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Java Programming
Exp No:
Date :
Page No:
AIM:. java program for user defined exception
Program:
class WrongInputException extends Exception {
WrongInputException(String s) {
super(s);
}
}
class Input {
void method() throws WrongInputException {
throw new WrongInputException("Wrong input");
}
}
class TestInput {
public static void main(String[] args){
try {
new Input().method();
}
catch(WrongInputException wie) {
System.out.println(wie.getMessage());
}
}
}
Output:
Wrong exception.
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
AIM:.write a java program to create a class mytheard in this class constructor using
super and starts the thread
Program:
class MyException extends Exception{
String str1;
MyException(String str2) {
str1=str2;
}
public String toString(){
return ("Output String = "+str1) ;
}
}
class CustomException{
public static void main(String args[]){
try
{
throw new MyException("Custom");
// I'm throwing user defined custom exception above
}
catch(MyException exp){
System.out.println("Hi this is my catch block") ;
System.out.println(exp) ;
}
}
}
Output:
Hi this is my catch block
Output String = Custom
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Java Programming
Exp No:
Date :
Page No:
AIM:.write a java program implementing the life cycle of an applet.
a.Create a dialogbox and menu
b.grid layout.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import com.bruceeckel.swing.*;
public class TicTacToe extends JApplet {
private JTextField
rows = new JTextField("3"),
cols = new JTextField("3");
private static final int BLANK = 0, XX = 1, OO = 2;
class ToeDialog extends JDialog {
private int turn = XX; // Start with x's turn
ToeDialog(int cellsWide, int cellsHigh) {
setTitle("The game itself");
Container cp = getContentPane();
cp.setLayout(new GridLayout(cellsWide, cellsHigh));
for(int i = 0; i < cellsWide * cellsHigh; i++)
cp.add(new ToeButton());
setSize(cellsWide * 50, cellsHigh * 50);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
}
class ToeButton extends JPanel {
private int state = BLANK;
public ToeButton() { addMouseListener(new ML()); }
public void paintComponent(Graphics g) {
super.paintComponent(g);
int
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Java Programming
Exp No:
Date :
Page No:
x1 = 0, y1 = 0,
x2 = getSize().width - 1,
y2 = getSize().height - 1;
g.drawRect(x1, y1, x2, y2);
x1 = x2/4;
y1 = y2/4;
int wide = x2/2, high = y2/2;
if(state == XX) {
g.drawLine(x1, y1, x1 + wide, y1 + high);
g.drawLine(x1, y1 + high, x1 + wide, y1);
}
if(state == OO)
g.drawOval(x1, y1, x1 + wide/2, y1 + high/2);
}
class ML extends MouseAdapter {
public void mousePressed(MouseEvent e) {
if(state == BLANK) {
state = turn;
turn = (turn == XX ? OO : XX);
}
else
state = (state == XX ? OO : XX);
repaint();
}
}
}
}
class BL implements ActionListener {
public void actionPerformed(ActionEvent e) {
JDialog d = new ToeDialog(
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Java Programming
Exp No:
Date :
Page No:
Integer.parseInt(rows.getText()),
Integer.parseInt(cols.getText()));
d.setVisible(true);
}
}
public void init() {
JPanel p = new JPanel();
p.setLayout(new GridLayout(2,2));
p.add(new JLabel("Rows", JLabel.CENTER));
p.add(rows);
p.add(new JLabel("Columns", JLabel.CENTER));
p.add(cols);
Container cp = getContentPane();
cp.add(p, BorderLayout.NORTH);
JButton b = new JButton("go");
b.addActionListener(new BL());
cp.add(b, BorderLayout.SOUTH);
}
public static void main(String[] args) {
Console.run(new TicTacToe(), 200, 100);
}
}
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
Ouput:
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
AIM:. write a java program for showing x and y position of the cursor movement using
mouse
Program:
public partial class Form1 : Form
{
private LowLevelMouseProc _proc;
private IntPtr _hookID = IntPtr.Zero;
public Form1()
{
InitializeComponent();
InitHook();
}
[System.Runtime.InteropServices.DllImport(user32.dll)]
static extern bool SetCursorPos(int x, int y);
[System.Runtime.InteropServices.DllImport(user32.dll)]
public static extern void mouse_event(int dwFlags, int dx, int dy, int cButtons, int
dwExtraInfo);
public const int MOUSEEVENTF_LEFTDOWN = 0x02;
public const int MOUSEEVENTF_LEFTUP = 0x04;
public void SimulateLeftMouseClick(int xpos, int ypos)
{
//I unhooked just to omit the issue off simulating the click mouse event
UnhookWindowsHookEx(_hookID);
var rect = pnlClientScreen.RectangleToScreen(pnlClientScreen.ClientRectangle);
int thisTop = this.Top;
float vertScaleRatio = (float)rect.Size.Height /(float)Screen.PrimaryScreen.Bounds.Height;
float horzScaleRatio = (float)rect.Size.Width /(float)Screen.PrimaryScreen.Bounds.Width;
int clientXpos = (int)( xpos*vertScaleRatio)rect.X;
int clientYpos = (int)(ypos * horzScaleRatio)rect.Y;
SetCursorPos(clientXpos, clientYpos);
mouse_event(MOUSEEVENTF_LEFTDOWN, clientXpos,clientYpos, 0, 0);
Thread.Sleep(100);
mouse_event(MOUSEEVENTF_LEFTUP, clientXpos,clientYpos, 0, 0);
}
public void InitHook()
{
_proc = HookCallback;
_hookID = SetHook(_proc);
}
private static IntPtr SetHook(LowLevelMouseProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_MOUSE_LL, proc,
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);
private IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode = 0
MouseMessages.WM_LBUTTONDOWN == (MouseMessages)wParam)
{
MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam,
typeof(MSLLHOOKSTRUCT));
SimulateLeftMouseClick(hookStruct.pt.x, hookStruct.pt.y);
//Console.WriteLine(hookStruct.pt.x , hookStruct.pt.y);
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
private const int WH_MOUSE_LL = 14;
private enum MouseMessages
{
WM_LBUTTONDOWN = 0x0201,
WM_LBUTTONUP = 0x0202,
WM_MOUSEMOVE = 0x0200,
WM_MOUSEWHEEL = 0x020A,
WM_RBUTTONDOWN = 0x0204,
WM_RBUTTONUP = 0x0205
}
[StructLayout(LayoutKind.Sequential)]
private struct POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
private struct MSLLHOOKSTRUCT
{
public POINT pt;
public uint mouseData;
public uint flags;
public uint time;
public IntPtr dwExtraInfo;
}
[DllImport(user32.dll, CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId);
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
Page No:
[DllImport(user32.dll, CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport(user32.dll, CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport(kernel32.dll, CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
private void pnlClientScreen_MouseClick(object sender, MouseEventArgs e)
{
Graphics gr = pnlClientScreen.CreateGraphics();
gr.DrawEllipse(Pens.Red, e.X-5,e.Y-5, 10, 10);
gr.DrawEllipse(Pens.Red,e.X-7, e.Y-7, 14, 14);
}
private void button1_Click(object sender, EventArgs e)
{
InitHook();
}
output:
ADITYA ENGINEERING COLLEGE (CSE)
1
3
A
9
1
A
0
5
B
2
Exp No:
Date :
Java Programming
ADITYA ENGINEERING COLLEGE (CSE)
Page No:
1
3
A
9
1
A
0
5
B
2