Monday, 12 February 2018
Tuesday, 9 January 2018
recursion in data stucture factorial of a number
#include<iostream>
using namespace std;
int fact(int num)
{
if(num==0)
return 1;
else return num*fact(num-1);
}
int main()
{
int n;
cout<<"Enter any number please"<<endl;
cin>>n;
cout<<"factorial is "<<fact(n)<<endl;
}
using namespace std;
int fact(int num)
{
if(num==0)
return 1;
else return num*fact(num-1);
}
int main()
{
int n;
cout<<"Enter any number please"<<endl;
cin>>n;
cout<<"factorial is "<<fact(n)<<endl;
}
data structure
A program that add new node if the all node in the
#include <iostream>
#include<queue>
using namespace std;
struct BTNode{
int data;
BTNode *left;
BTNode *right;
};BTNode *root;
BTNode* getnewNode(int a){
BTNode *n=new BTNode;
if(a % 2==0)
{
cout<<"num is even: not added"<<endl;
}else
{
n->data=a;
}
n->right=NULL;
n->left=NULL;
return n;
}
BTNode* insertNode (BTNode* r,int d){
if(r==NULL)
{
r=getnewNode(d);
}else
{
if( d<=r->data)
{
r->left=insertNode(r->left,d);
}else
{
r->right=insertNode(r->right,d);
}
return r;
}
}
void in_orderdisplay( BTNode* r)
{
if(r==NULL)
{
return;
}
in_orderdisplay(r->left);
cout<<r->data;
in_orderdisplay(r->right);
}
void pre_orderdisplay(BTNode* r)
{
if(r==NULL)
{
return ;
}
cout<<r->data<<endl;
pre_orderdisplay(r->left);
pre_orderdisplay(r->right);
}
void post_orderdisplay(BTNode* r)
{
if(r==NULL)
{
return;
}
post_orderdisplay(r->left);
post_orderdisplay(r->right);
cout<<r->data;
}
void level_orderdisplay(BTNode* r){
if(r==NULL)
{
return;
}
queue<BTNode*> Q;
Q.push(r);
while(!Q.empty())
{
BTNode* temp=Q.front();
cout<<temp->data;
if(temp->left!=NULL)
{
Q.push(temp->left);
}
if( temp->right!=NULL)
{
Q.push(temp->right);
}
Q.pop();
}
}
int main()
{
int choice,a ;
root=NULL;
char ch='y';
while(ch='y')
{
cout<<"enter 1 to add node "<<endl;
cout<<"enter 2 to display"<<endl;
cout<<"enter 3 to inorder dispaly"<<endl;
cout<<"enter 4 to postorder dispaly"<<endl;
cout<<"enter 5 to level wise display"<<endl;
cin>>choice;
switch(choice)
{
case 1:
cout<<"enter value"<<endl;
cin>>a;
root=insertNode(root,a);
break;
case 2:
pre_orderdisplay(root);
break;
case 3:
in_orderdisplay(root);
break;
case 4:
post_orderdisplay(root);
break;
case 5:
level_orderdisplay(root);
break;
default:
break;
}
cout<<"prees y to continue"<<endl;
cout<<"press n to exist"<<endl;
cin>>ch;
}
}
#include <iostream>
#include<queue>
using namespace std;
struct BTNode{
int data;
BTNode *left;
BTNode *right;
};BTNode *root;
BTNode* getnewNode(int a){
BTNode *n=new BTNode;
if(a % 2==0)
{
cout<<"num is even: not added"<<endl;
}else
{
n->data=a;
}
n->right=NULL;
n->left=NULL;
return n;
}
BTNode* insertNode (BTNode* r,int d){
if(r==NULL)
{
r=getnewNode(d);
}else
{
if( d<=r->data)
{
r->left=insertNode(r->left,d);
}else
{
r->right=insertNode(r->right,d);
}
return r;
}
}
void in_orderdisplay( BTNode* r)
{
if(r==NULL)
{
return;
}
in_orderdisplay(r->left);
cout<<r->data;
in_orderdisplay(r->right);
}
void pre_orderdisplay(BTNode* r)
{
if(r==NULL)
{
return ;
}
cout<<r->data<<endl;
pre_orderdisplay(r->left);
pre_orderdisplay(r->right);
}
void post_orderdisplay(BTNode* r)
{
if(r==NULL)
{
return;
}
post_orderdisplay(r->left);
post_orderdisplay(r->right);
cout<<r->data;
}
void level_orderdisplay(BTNode* r){
if(r==NULL)
{
return;
}
queue<BTNode*> Q;
Q.push(r);
while(!Q.empty())
{
BTNode* temp=Q.front();
cout<<temp->data;
if(temp->left!=NULL)
{
Q.push(temp->left);
}
if( temp->right!=NULL)
{
Q.push(temp->right);
}
Q.pop();
}
}
int main()
{
int choice,a ;
root=NULL;
char ch='y';
while(ch='y')
{
cout<<"enter 1 to add node "<<endl;
cout<<"enter 2 to display"<<endl;
cout<<"enter 3 to inorder dispaly"<<endl;
cout<<"enter 4 to postorder dispaly"<<endl;
cout<<"enter 5 to level wise display"<<endl;
cin>>choice;
switch(choice)
{
case 1:
cout<<"enter value"<<endl;
cin>>a;
root=insertNode(root,a);
break;
case 2:
pre_orderdisplay(root);
break;
case 3:
in_orderdisplay(root);
break;
case 4:
post_orderdisplay(root);
break;
case 5:
level_orderdisplay(root);
break;
default:
break;
}
cout<<"prees y to continue"<<endl;
cout<<"press n to exist"<<endl;
cin>>ch;
}
}
c++ how to make function that sum the number
#include<iostream>
using namespace std;
void sum (int&, int&);
main()
{
int a,b;
cin>>a>>b;
sum(a,b);
}
void sum(int &c, int &d)
{
int sum;
sum=c+d;
cout<<"sum is: "<<sum;
}
using namespace std;
void sum (int&, int&);
main()
{
int a,b;
cin>>a>>b;
sum(a,b);
}
void sum(int &c, int &d)
{
int sum;
sum=c+d;
cout<<"sum is: "<<sum;
}
c++ program that find isosceles triangle equilateral triangle right angle triangle and scalene triangle
#include <iostream>
using namespace std;
main(){
int side1,side2,side3,a,b,c;
cout<<"Enter first side =";
cin>>side1;
cout<<"Enter second side=";
cin>>side2;
cout<<"Enter third side=";
cin>>side3;
if(side1==side2 && side2==side3 && side1==side3)
{
cout<<"isosceles triangle";
}
else if (side1==side2==side3)
{
cout<<"equilateral triangle";
}
else if(c*c==a*a+b*b || b*b==a*a+c*c || a*a==b*b+c*c )
{
cout<<"right angle triangle";
}
else
{
cout<<"scalene triangle";
}
}
using namespace std;
main(){
int side1,side2,side3,a,b,c;
cout<<"Enter first side =";
cin>>side1;
cout<<"Enter second side=";
cin>>side2;
cout<<"Enter third side=";
cin>>side3;
if(side1==side2 && side2==side3 && side1==side3)
{
cout<<"isosceles triangle";
}
else if (side1==side2==side3)
{
cout<<"equilateral triangle";
}
else if(c*c==a*a+b*b || b*b==a*a+c*c || a*a==b*b+c*c )
{
cout<<"right angle triangle";
}
else
{
cout<<"scalene triangle";
}
}
Sunday, 17 December 2017
how to insert value in table using sql server
how to insert value in table using sql server
insert into students(id,name,course) values (9,'bilal','BSE')How to create a table in sql server
How to create a table in sql server
create table students(
stdID int primary key,
Name nvarchar(30),
Course nvarchar(30)
)
A program find the table of number
import java.awt.Toolkit;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
import java.io.*;
import com.sun.speech.freetts.*;
public class tabels extends javax.swing.JFrame {
/**
* Creates new form tabels
*/
public tabels() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
tf1 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
tf = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
ta = new javax.swing.JTextArea();
l = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
tf1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
tf1.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyTyped(java.awt.event.KeyEvent evt) {
tf1KeyTyped(evt);
}
});
jLabel2.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jLabel2.setForeground(new java.awt.Color(102, 102, 0));
jLabel2.setText("Enter table number");
jLabel2.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jLabel2MouseClicked(evt);
}
});
tf.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
tf.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyTyped(java.awt.event.KeyEvent evt) {
tfKeyTyped(evt);
}
});
jLabel3.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jLabel3.setForeground(new java.awt.Color(102, 102, 0));
jLabel3.setText("Enter table Limit");
jLabel3.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jLabel3MouseClicked(evt);
}
});
jButton1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
jButton1.setForeground(new java.awt.Color(102, 102, 0));
jButton1.setText("Display Table");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
jButton2.setForeground(new java.awt.Color(102, 102, 0));
jButton2.setText("Refresh");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
ta.setColumns(20);
ta.setFont(new java.awt.Font("Monospaced", 1, 24)); // NOI18N
ta.setForeground(new java.awt.Color(102, 102, 0));
ta.setRows(5);
jScrollPane1.setViewportView(ta);
l.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
l.setText("Table of Number");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(l, javax.swing.GroupLayout.PREFERRED_SIZE, 214, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(144, 144, 144))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(30, 30, 30)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 411, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(tf1, javax.swing.GroupLayout.PREFERRED_SIZE, 216, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(tf, javax.swing.GroupLayout.PREFERRED_SIZE, 216, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(40, 40, 40)
.addComponent(l)
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(tf1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGap(28, 28, 28)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(tf, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 425, Short.MAX_VALUE))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
pack();
}// </editor-fold>
private void tfKeyTyped(java.awt.event.KeyEvent evt) {
char ch = evt.getKeyChar();
if(Character.isAlphabetic(ch))
{
evt.consume();
} // TODO add your handling code here:
}
private void jLabel2MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void tf1KeyTyped(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void jLabel3MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
int n1=Integer.parseInt(tf.getText());
int n=Integer.parseInt(tf1.getText());
for(int i=1;i<=n1;i++){
ta.append(n+" x "+i+" = "+n*i+"\n");
} }
catch(Exception e)
{
JOptionPane.showMessageDialog(null, e);
} // TODO add your handling code here:
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
ta.setText("");
tf1.setText("");
tf.setText("");// TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new tabels().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JLabel l;
private javax.swing.JTextArea ta;
private javax.swing.JTextField tf;
private javax.swing.JTextField tf1;
// End of variables declaration
}
java program print the number of table
import java.awt.Toolkit;import java.util.Calendar;import java.util.GregorianCalendar;import java.util.logging.Level;import java.util.logging.Logger;import javax.swing.JOptionPane;import java.io.*;import com.sun.speech.freetts.*;
public class tabels extends javax.swing.JFrame {
/** * Creates new form tabels */ public tabels() { initComponents(); }
/** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() {
jPanel1 = new javax.swing.JPanel(); tf1 = new javax.swing.JTextField(); jLabel2 = new javax.swing.JLabel(); tf = new javax.swing.JTextField(); jLabel3 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jScrollPane1 = new javax.swing.JScrollPane(); ta = new javax.swing.JTextArea(); l = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
tf1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N tf1.addKeyListener(new java.awt.event.KeyAdapter() { public void keyTyped(java.awt.event.KeyEvent evt) { tf1KeyTyped(evt); } });
jLabel2.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N jLabel2.setForeground(new java.awt.Color(102, 102, 0)); jLabel2.setText("Enter table number"); jLabel2.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { jLabel2MouseClicked(evt); } });
tf.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N tf.addKeyListener(new java.awt.event.KeyAdapter() { public void keyTyped(java.awt.event.KeyEvent evt) { tfKeyTyped(evt); } });
jLabel3.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N jLabel3.setForeground(new java.awt.Color(102, 102, 0)); jLabel3.setText("Enter table Limit"); jLabel3.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { jLabel3MouseClicked(evt); } });
jButton1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N jButton1.setForeground(new java.awt.Color(102, 102, 0)); jButton1.setText("Display Table"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } });
jButton2.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N jButton2.setForeground(new java.awt.Color(102, 102, 0)); jButton2.setText("Refresh"); jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } });
ta.setColumns(20); ta.setFont(new java.awt.Font("Monospaced", 1, 24)); // NOI18N ta.setForeground(new java.awt.Color(102, 102, 0)); ta.setRows(5); jScrollPane1.setViewportView(ta);
l.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N l.setText("Table of Number");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE) .addComponent(l, javax.swing.GroupLayout.PREFERRED_SIZE, 214, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(144, 144, 144)) .addGroup(jPanel1Layout.createSequentialGroup() .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(30, 30, 30) .addComponent(jButton2) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jButton1)) .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 411, javax.swing.GroupLayout.PREFERRED_SIZE) .addGroup(jPanel1Layout.createSequentialGroup() .addContainerGap() .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel2) .addGap(18, 18, 18) .addComponent(tf1, javax.swing.GroupLayout.PREFERRED_SIZE, 216, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel3) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(tf, javax.swing.GroupLayout.PREFERRED_SIZE, 216, javax.swing.GroupLayout.PREFERRED_SIZE))))) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(40, 40, 40) .addComponent(l) .addGap(18, 18, 18) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(tf1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel2)) .addGap(28, 28, 28) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(tf, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel3)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1) .addComponent(jButton2)) .addGap(18, 18, 18) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 425, Short.MAX_VALUE)) );
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addContainerGap()) );
pack(); }// </editor-fold>
private void tfKeyTyped(java.awt.event.KeyEvent evt) { char ch = evt.getKeyChar(); if(Character.isAlphabetic(ch)) { evt.consume(); } // TODO add your handling code here: }
private void jLabel2MouseClicked(java.awt.event.MouseEvent evt) { // TODO add your handling code here: }
private void tf1KeyTyped(java.awt.event.KeyEvent evt) { // TODO add your handling code here: }
private void jLabel3MouseClicked(java.awt.event.MouseEvent evt) { // TODO add your handling code here: }
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { try { int n1=Integer.parseInt(tf.getText()); int n=Integer.parseInt(tf1.getText()); for(int i=1;i<=n1;i++){ ta.append(n+" x "+i+" = "+n*i+"\n"); } }catch(Exception e){ JOptionPane.showMessageDialog(null, e);} // TODO add your handling code here: }
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { ta.setText(""); tf1.setText(""); tf.setText("");// TODO add your handling code here: }
/** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(tabels.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold>
/* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new tabels().setVisible(true); } }); }
// Variables declaration - do not modify private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JPanel jPanel1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JLabel l; private javax.swing.JTextArea ta; private javax.swing.JTextField tf; private javax.swing.JTextField tf1; // End of variables declaration }
Thursday, 7 December 2017
java calculatore
package bilaly;
import javax.swing.*;
import java.awt.event.*;
public class Main implements ActionListener{
JTextField tf1,tf2,tf3;
JButton b1,b2,b3,b4;
Main(){
JFrame f= new JFrame();
tf1=new JTextField();
tf1.setBounds(50,50,150,20);
tf2=new JTextField();
tf2.setBounds(50,100,150,20);
tf3=new JTextField();
tf3.setBounds(50,150,150,20);
tf3.setEditable(false);
b1=new JButton("+");
b1.setBounds(20,200,50,50);
b2=new JButton("-");
b2.setBounds(80,200,50,50);
b3=new JButton("x");
b3.setBounds(200,200,50,50);
b4=new JButton("/");
b4.setBounds(140,200,50,50);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
f.add(tf1);f.add(tf2);f.add(tf3);f.add(b1);f.add(b2); f.add(b3);f.add(b4);
f.setSize(300,300);
f.setLayout(null);
f.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String s1=tf1.getText();
String s2=tf2.getText();
Double a = new Double(s1);
Double b= new Double(s2);
double c=0;
if(e.getSource()==b1){
c=a+b;
}else if(e.getSource()==b2){
c=a-b;
} else if(e.getSource()==b3){
c=a*b;
} else if(e.getSource()==b4){
c=a/b;
}
String result=String.valueOf(c);
tf3.setText(result);
}
public static void main(String[] args) {
new Main();
} }
Monday, 20 November 2017
Using java build a beautiful clock display current time
THIS IS THE CODE TO DISPLAY A BEAUTIFUL CLOCK
package javaaa;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import java.util.Calendar;
import javax.swing.*;
public class Javaaa extends JApplet {
public static void main(String s[]) {
JFrame frame = new JFrame();
frame.setTitle("Clock");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JApplet applet = new Javaaa();
applet.init();
frame.getContentPane().add(applet);
frame.pack();
frame.setVisible(true);
}
public void init() {
JPanel panel = new ClockPanel();
getContentPane().add(panel);
}
}
class ClockPanel extends JPanel implements ActionListener{
AffineTransform rotH = new AffineTransform();
AffineTransform rotM = new AffineTransform();
AffineTransform rotS = new AffineTransform();
public ClockPanel() {
setPreferredSize(new Dimension(640, 480));
setBackground(Color.white);
Timer timer = new Timer(500, this);
timer.start();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
Font currentFont = g2.getFont();
g2.translate(320,240);
// clock face
Paint paint = new GradientPaint
(-140,-140,Color.GREEN,-10,-10,Color.ORANGE);
g2.setPaint(paint);
g2.fillOval(-210, -210, 420, 420);
g2.setColor(Color.red);
Font newFont = currentFont.deriveFont(currentFont.getSize() * 3.4F);
g2.setFont(newFont);
g2.drawString("CLOCK", -70, 80);
g2.setColor(Color.black);
Font newFont1 = currentFont.deriveFont(currentFont.getSize() * 2.4F);
g2.setFont(newFont1);
g2.drawString("12", -18, -140);
g2.drawString("3", 134, 19);
g2.drawString("6", -8, 159);
g2.drawString("9", -149, 20);
Stroke stroke = new BasicStroke(3);
g2.setStroke(stroke);
g2.drawOval(-210, -210, 420, 420);
for (int i = 0; i < 24; i++) {
g2.rotate(2*Math.PI/12);
if(i%2==0)
g2.setColor(Color.BLUE);
else
g2.setColor(Color.red);
g2.fill3DRect(-30, -200, 60, 30, true);
}
// clock hands
Shape hour = new Line2D.Double(0, 0, 0, -100);
hour = rotH.createTransformedShape(hour);
Shape minute = new Line2D.Double(0, 0, 0, -140);
minute = rotM.createTransformedShape(minute);
Shape second = new Line2D.Double(0, 0, 0, -170);
second = rotS.createTransformedShape(second);
g2.setColor(Color.MAGENTA);
g2.setStroke(new BasicStroke(10,
BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
g2.draw(hour);
g2.draw(minute);
g2.setStroke(new BasicStroke(4));
g2.draw(second);
}
public void actionPerformed(ActionEvent e) {
int hour = Calendar.getInstance().get(Calendar.HOUR);
int min = Calendar.getInstance().get(Calendar.MINUTE);
int sec = Calendar.getInstance().get(Calendar.SECOND);
rotH.setToRotation(Math.PI * (hour+min/60.0)/6.0);
rotM.setToRotation(Math.PI * min /30.0);
rotS.setToRotation(Math.PI * sec /30.0);
repaint();
}}
OUTPUT
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