//=======================================================// file button1.java// display lable textfield and button//======================================================import java.applet.*;import java.awt.*;import java.awt.event.*;////=======================================================
public class calculator2 extends Applet implements ActionListener{ Button bb[ ] =new Button[10]; Button sum,sub,mul,div,c,z; TextArea t1; Label L1; int n1=0; int n2=0; int n3=0; int flag1=0; int flag2=0; int flag=0; int i; //===============initialization of objects======================= public void init() { L1 =new Label(" CALULATOR "); add(L1); t1=new TextField(10); add(t1); for(i=0;i<10;i++) { bb[i] =new Button(String.valueOf(i)); add(bb[i]); bb[i].addActionListener(this); }
sum =new Button("+"); add (sum); sum.addActionListener(this);
sub =new Button("-"); add (sub); sub.addActionListener(this); mul =new Button("*"); add (mul); mul.addActionListener(this); div =new Button("%"); add (div); div.addActionListener(this); c=new Button("c"); add(c); c.addActionListener(this); z=new Button("="); add(z); z.addActionListener(this); } //=======================calling the interface======================== public void actionPerformed(ActionEvent e) { if(e.getSource()==bb[0]) { n2=n2*10; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[1]) { n2=n2*10+1; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[2]) { n2=n2*10+2; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[3]) { n2=n2*10+3; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[4]) { n2=n2*10+4; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[5]) { n2=n2*10+5; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[6]) { n2=n2*10+6; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[7]) { n2=n2*10+7; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[8]) { n2=n2*10+8; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==bb[9]) { n2=n2*10+9; t1.setTextField((String.valueOf(n2)); } if(e.getSource()==mul) { t1.setTextField(" "); flag=1; } if(e.getSource()==div) { t1.setTextField(" "); flag=2; } if(e.getSource()==sum) { t1.setTextField(" "); flag=3; } if(e.getSource()==sub) { t1.setTextField(" "); flag=4; } if(e.getSource()==z) { t1.setTextField(" "); flag=5; } if(flag!=0) { flag1=flag2; flag2=flag; flag=0; n3=n1; n1=n2; n2=0; } switch(flag1) { case 1: {n1=n3*n1;t1.setTextField((String.valueOf(n1));break;} case 2: {n1=n3/n1;t1.setTextField((String.valueOf(n1));break;} case 3: {n1=n3+n1;t1.setTextField((String.valueOf(n1));break;} case 4: {n1=n3-n1;t1.setTextField((String.valueOf(n1));break;} case 5: {n1=n3;t1.setTextField((String.valueOf(n1));break;} } }}
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Lord ganesh
sanjeetjha
balokova russia
sudoku program
//=======================================================
// file SU_DU_KU.java
//
//======================================================
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
//
//=======================================================
public class SU_DU_KU extends Applet implements ActionListener
{
Button START,NEXT;
TextField t[] =new TextField[81];
int a[][] =new int[9][9];
int b[][] =new int[9][9];
Font f=new Font("helvetica",Font.BOLD,30);
//===============initialization of objects=======================
public void init()
{
int i;
Graphics g =new Graphics();
START=new Button(" CLICK START ");
add(START);
START.addActionListener(this);
for(i=0;i<81;i++)
{
t[i] =new TextField(1);
add(t[i]);
}
setBackground(new Color(78,50,100));
//default setting
g.setColor(Color.red);
for(i=0;i<81;i++)
t[i].setText("0");
NEXT=new Button(" CLICK NEXT for NEW SUDUKU");
add(NEXT);
NEXT.addActionListener(this);
}
//===================================================================
public void paint(Graphics g)
{ g.setColor(new Color(8,8,9));
g.fillRect(0,26,350,254);
g.setColor(Color.red);
g.fillRect(0,26,350,6);
g.fillRect(0,112,350,6);
g.fillRect(0,196,350,6);
g.fillRect(0,280,350,6);
g.fillRect(0,26,6,254);
g.fillRect(108,26,6,254);
g.fillRect(216,26,6,254);
g.fillRect(324,26,6,254);
g.setFont(f);
}
//=======================calling the interface========================
public void actionPerformed(ActionEvent e)
{
int i,j,k=0;
if(e.getSource()==START)
{
//reading text from text field and assign to b[i][j]
for(i=0;i<9;i++)
for(j=0;j<9;j++)
{
a[i][j]=Integer.parseInt(t[k++].getText());
b[i][j]=a[i][j];
}
call_sudu_ku( );
k=0;
for(i=0;i<9;i++)
for(j=0;j<9;j++)
{
t[k++].setText(String.valueOf(a[i][j]));
}
}
if(e.getSource()==NEXT)
//default setting
for(i=0;i<81;i++)
t[i].setText("0");
}
//==========================================================================
//===========================call_sudu_ku( )=================================
public void call_sudu_ku( )
{
int i,j,k,l;
int m[]=new int[90];
int n[]=new int[90];
int count=0;
int temp1,temp2;
int p=0;
for(i=0;i<9;i++)
for(j=0;j<9;j++)
{
do
{
count ++;
if(b[i][j]==0)
{
m[p] =i;
n[p]=j;
do
{
a[i][j]=a[i][j]+1;
temp1=compare(i,j) ;
}while(temp1==0);
p=p+1;
}
temp2=0;
if(a[i][j]==10)
{
temp2=1;
a[i][j]=0;
p=p-2;
i=m[p];
j=n[p];
}
}while(temp2==1);
if(count==100) break;
}
}
//=======================compare(int i,int j)==================================
public int compare(int i,int j)
{
int k,l,temp;
temp=1;
// checking for horizontal
for(k=0;k<9;k++)
{
if(a[i][j]==a[i][k])
if(j!=k)
temp=0;
}
//checking for vertical
for(k=0;k<9;k++)
{
if(a[i][j]==a[k][j])
if(i!=k)
temp=0;
}
//checking for box 1
if(i<3 && j<3)
{
for(k=0;k<3;k++)
for(l=0;l<3;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 2
if(i<3 && j<6 &&j>2)
{
for(k=0;k<3;k++)
for(l=3;l<6;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 3
if(i<3 && j>5)
{
for(k=0;k<3;k++)
for(l=6;l<9;l++)
{
if(i==k&&j==l) ;
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 4
if(i>2 &&i<6 && j<3)
{
for(k=3;k<6;k++)
for(l=0;l<3;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 5
if(i>2&& i<6 && j<6 &&j>2)
{
for(k=3;k<6;k++)
for(l=3;l<6;l++)
{
if(i==k&&j==l) ;
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 6
if(i>2 && i<6 && j>5)
{
for(k=3;k<6;k++)
for(l=6;l<9;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 7
if(i>5&&j<3)
{
for(k=6;k<9;k++)
for(l=0;l<3;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 8
if(i>5 && j<6&&j>2)
{
for(k=6;k<9;k++)
for(l=3;l<6;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
//checking for box 9
if(i>5 &&j>5)
{
for(k=6;k<9;k++)
for(l=6;l<9;l++)
{
if(i==k&&j==l);
else if(a[i][j]==a[k][l])
temp=0;
}
}
return temp;
}
}
calculator
//=======================================================
// file calculator2.java
// display lable textfield and button
//======================================================
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
//
//=======================================================
public class calculator2 extends Applet implements ActionListener
{
Button bb[ ] =new Button[10];
Button sum,sub,mul,div,c,z;
Button on,off,backspace;
TextField t1;
Label L1;
int pre_no=0;
int current_no=0;
int n2=0;
int n3=0;
int pre_flag=0;
int current_flag=0;
int flag=0;
int i;
int check;
//===============initialization of objects=======================
public void init()
{
L1 =new Label("CALULATOR");
add(L1);
t1=new TextField(22);
add(t1);
on=new Button("ON");
add(on);
on.addActionListener(this);
off=new Button("OFF");
add(off);
off.addActionListener(this);
backspace=new Button("backspace");
add(backspace);
backspace.addActionListener(this);
c=new Button("c");
add(c);
c.addActionListener(this);
for(i=0;i<10;i++)
{
bb[i] =new Button(String.valueOf(i));
add(bb[i]);
bb[i].addActionListener(this);
}
sum =new Button("+");
add (sum);
sum.addActionListener(this);
sub =new Button("-");
add (sub);
sub.addActionListener(this);
mul =new Button("*");
add (mul);
mul.addActionListener(this);
div =new Button("%");
add (div);
div.addActionListener(this);
z=new Button("=");
add(z);
z.addActionListener(this);
setBackground(Color.red);
}
public int number(int number,int k)
{
number=number*10+k;
t1.setText(String.valueOf(number));
check=k;
if(current_flag==5)
{ pre_flag=0;
current_flag=0;
pre_no=0;
current_no=0;current_no=0;
}
return(number);
}
//=======================calling the interface========================
public void actionPerformed(ActionEvent e)
{ flag=0;
if(e.getSource()==bb[0])
n2=number(n2,0);
if(e.getSource()==bb[1])
n2=number(n2,1);
if(e.getSource()==bb[2])
n2=number(n2,2);
if(e.getSource()==bb[3])
n2=number(n2,3);
if(e.getSource()==bb[4])
n2=number(n2,4);
if(e.getSource()==bb[5])
n2=number(n2,5);
if(e.getSource()==bb[6])
n2=number(n2,6);
if(e.getSource()==bb[7])
n2=number(n2,7);
if(e.getSource()==bb[8])
n2=number(n2,8);
if(e.getSource()==bb[9])
n2=number(n2,9);
if(e.getSource()==mul)
{ t1.setText(" ");
flag=1;
}
if(e.getSource()==div)
{
t1.setText(" ");
flag=2;
}
if(e.getSource()==sum)
{
t1.setText(" ");
flag=3;
}
if(e.getSource()==sub)
{
t1.setText(" ");
flag=4;
}
if(e.getSource()==z)
{
t1.setText(" ");
flag=5;
}
if(e.getSource()==c)
{
t1.setText(" ");
n2=0;
if(current_flag==5)
{
pre_flag=0;
current_flag=0;
pre_no=0;
current_no=0;
}
}
if(e.getSource()==backspace)
{
n2=(n2-check)/10;
t1.setText(String.valueOf(n2));
}
if(flag!=0)
{ pre_flag=current_flag;
current_flag=flag;
pre_no=current_no;
current_no=n2;
n2=0;flag=0;
if(current_flag ==5 && pre_flag==5)
{
pre_flag=0;
current_flag=0;
pre_no=0;
current_no=0;
}
switch(pre_flag)
{
case 1: current_no=pre_no * current_no ;
t1.setText(String.valueOf(current_no));
break;
case 2: current_no=pre_no/current_no;
t1.setText(String.valueOf(current_no));
break;
case 3: current_no=pre_no+current_no;
t1.setText(String.valueOf(current_no));
break;
case 4: current_no=pre_no-current_no;
t1.setText(String.valueOf(current_no));
break;
case 5: current_no=pre_no;
t1.setText(String.valueOf(current_no));
}
}
}
}
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