Tips:
For checking Condition use if
For using choice use Switch()
For repeated loop use for,while or do while
Saturday, July 20, 2013
Thursday, July 18, 2013
lesson 9
private void
txtsStateChanged(javax.swing.event.ChangeEvent evt) {
int c =
txts.getValue();
txtc.setText(""+c+"CELCIUS");
int f = ((c*9)/5)+32;
txtf.setText(""+f+"FAHRENHEIT");
}
netbeans lesson 8
private void
jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{
txtcn.setText(" ");
txtp.setText(" ");
txtt.setText(" ");
txtr.setText(" ");
txtsi.setText(" ");
txtta.setText(" ");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
String cn = txtcn.getText();
int p =
Integer.parseInt(txtp.getText());
int t =
Integer.parseInt(txtt.getText());
int r = Integer.parseInt(txtr.getText());
double s,ta ;
s = (p * r * t)/100 ;
ta = ( p+s) ;
txtsi.setText(" "+s);
txtta.setText(" "+ta);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new SI().setVisible(true);
}
});
}
Monday, June 24, 2013
Netbeans Lesson 7
Example 1. Write a program to print the output like below.
1
10
100
1000
.
.
10 term.
Program:-
int a,b;
a=1;b=1;
while (a<=10)
{
system.out.print(b)
b=b*10;
a++;
}
1
10
100
1000
.
.
10 term.
Program:-
int a,b;
a=1;b=1;
while (a<=10)
{
system.out.print(b)
b=b*10;
a++;
}
Netbeans Lesson 6
While Loop:
While statement is used to execute the set of instruction in its loop untill the condition is true. It will keep on executing the commands in its loop untill the condition become false.
Syntax :
while (<expression or condtion>)
{
set of statements
.
.
n;
}
Example
To the following series with while loop.
1,2,3,4,----------10
int a;
a=1;
while(a<=10)
{
System.out.print(a);
a++;
}
if want to print this in c Language or c++ then simply write printf(a) in c and cout<<a in c++ to get the same result.
While statement is used to execute the set of instruction in its loop untill the condition is true. It will keep on executing the commands in its loop untill the condition become false.
Syntax :
while (<expression or condtion>)
{
set of statements
.
.
n;
}
Example
To the following series with while loop.
1,2,3,4,----------10
int a;
a=1;
while(a<=10)
{
System.out.print(a);
a++;
}
if want to print this in c Language or c++ then simply write printf(a) in c and cout<<a in c++ to get the same result.
Thursday, May 9, 2013
Netbeans Lesson 5
Q4.
To find eligibility for vote.
private void
jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
int age;
String txt =
txta.getText();
age =
Integer.parseInt(txt);
if(age>=18)
txtm.setText("YOU ARE ELIGIBLE
VOTER");
else
txtm.setText("YOU ARE NOT ELIGIBLE FOR
VOTING");
}
private void
jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void
jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
txtm.setText("
");
txta.setText("
");
}
Monday, May 6, 2013
mysql lesson 3
mysql>
UPDATE EMP SET SAL =850 WHERE SAL =800;
Query
OK, 1 row affected (0.10 sec)
Rows
matched: 1 Changed: 1 Warnings: 0SELECT * FROM EMP WHERE
JOB='CLERK' AND COMM<=100 ;
mysql>
ALTER TABLE EMP MODIFY JOB CHAR(30);
Query
OK, 1 row affected (0.27 sec)
Records:
1 Duplicates: 0 Warnings: 0
|
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
|
8369
|
SMITH
|
CLERK
|
8902
|
1990-12-18
|
800
|
100
|
20
|
|
8999
|
HARPREET
|
CLERK
|
8878
|
1992-03-20
|
300
|
100
|
20
|
SELECT
* FROM EMP WHERE(JOB = 'SALESMAN' AND SAL>= 300) OR (JOB = 'MANAGER' AND
SAL>= 200);
|
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
|
8499
|
ANYA
|
SALESMAN
|
8698
|
1991-02-20
|
1600
|
300
|
30
|
|
8521
|
SETH
|
SALESMAN
|
8698
|
1991-02-22
|
1250
|
500
|
30
|
|
8566
|
MAHADEVAN
|
MANAGER
|
8839
|
1991-04-02
|
2985
|
200
|
20
|
|
8698
|
BINA
|
MANAGER
|
8839
|
1991-05-01
|
2850
|
400
|
30
|
|
8839
|
AMIR
|
MANAGER
|
8840
|
1991-11-18
|
3000
|
200
|
10
|
|
8993
|
TAJINDER
|
SALESMAN
|
8888
|
1992-03-11
|
3300
|
210
|
10
|
netbeans Lesson 4
Q3.
To Calculate %age using if/else command.
private void
jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0); // TODO add your handling code here:
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{
txtsn.setText("");
txtfn.setText(" ");
txtrn.setText(" ");
txtc.setText(" ");
txte.setText(" ");
txtm.setText(" ");
txtch.setText(" ");
txtco.setText(" ");
txtt.setText(" ");
txtp.setText(" ");
txtg.setText(" ");
txtph.setText(" ");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
int e =
Integer.parseInt(txte.getText());
int m =
Integer.parseInt(txtm.getText());
int ch = Integer.parseInt(txtch.getText());
int ph =
Integer.parseInt(txtph.getText());
int co =
Integer.parseInt(txtco.getText());
double t,p;
t =(e+m+ch+ph+co);
p =(t)/5 ;
txtt.setText(" "+t);
txtp.setText(" "+p);
if(p>=90){
txtg.setText("A");
}
else
if(p>=70){
txtg.setText("B");
}
else
if(p>=55){
txtg.setText("C");
}
else
if(p>=35){
txtg.setText("D");
}
else
if(p<=35){
txtg.setText("F");
}
}
Thursday, May 2, 2013
Netbeans Lesson 3
Q4.
To find eligibility for vote.
private void jButton1ActionPerformed(java.awt.event.ActionEvent
evt) {
int age;
String txt =
txta.getText();
age =
Integer.parseInt(txt);
if(age>=18)
txtm.setText("YOU ARE ELIGIBLE
VOTER");
else
txtm.setText("YOU ARE NOT ELIGIBLE FOR
VOTING");
}
private void
jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void
jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
txtm.setText("
");
txta.setText("
");
}
netbeans Lesson 2
Q2.
To calculate the Simple Interest.
private void
jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{
txtcn.setText(" ");
txtp.setText(" ");
txtt.setText(" ");
txtr.setText(" ");
txtsi.setText(" ");
txtta.setText(" ");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
String cn = txtcn.getText();
int p = Integer.parseInt(txtp.getText());
int t =
Integer.parseInt(txtt.getText());
int r =
Integer.parseInt(txtr.getText());
double s,ta ;
s = (p * r * t)/100 ;
ta = ( p+s) ;
txtsi.setText(" "+s);
txtta.setText(" "+ta);
}
netbeans lesson 1
Q1.PROGRAM
TO CALCULATE PERCENTAGE.
CODING
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0); // TODO add your handling code here:
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
txtsn.setText(" "); // TODO add your handling code here:\
txtmo.setText("");
txtmm.setText(" ");
txtp.setText(" ");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
String sn= txtsn.getText();
int mo =
Integer.parseInt(txtmo.getText());
int mm =
Integer.parseInt(txtmm.getText());
double p ;
p=(mo*100)/mm;
txtp.setText(" "+p);
}
mysql lesson 2
mysql> INSERT INTO
EMP VALUES(8369,'SMITH','CLERK',8902,'1990-12-18',800,100,20);
Query OK, 1 row affected (0.04 sec)
mysql> SELECT * FROM EMP ;
|
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
|
8369
|
SMITH
|
CLERK
|
8902
|
1990-12-18
|
800
|
100
|
20
|
|
8499
|
ANYA
|
SALESMAN
|
8698
|
1991-02-20
|
1600
|
300
|
30
|
|
8521
|
SETH
|
SALESMAN
|
8698
|
1991-02-22
|
1250
|
500
|
30
|
|
8566
|
MAHADEVAN
|
MANAGER
|
8839
|
1991-04-02
|
2985
|
200
|
20
|
|
8698
|
BINA
|
MANAGER
|
8839
|
1991-05-01
|
2850
|
400
|
30
|
|
8839
|
AMIR
|
MANAGER
|
8840
|
1991-11-18
|
3000
|
200
|
10
|
|
8993
|
TAJINDER
|
SALESMAN
|
8888
|
1992-03-11
|
3300
|
210
|
10
|
|
8999
|
HARPREET
|
CLERK
|
8878
|
1992-03-20
|
300
|
100
|
20
|
mysql> SELECT * FROM EMP WHERE JOB='SALESMAN';
|
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
|
8499
|
ANYA
|
SALESMAN
|
8698
|
1991-02-20
|
1600
|
300
|
30
|
|
8521
|
SETH
|
SALESMAN
|
8698
|
1991-02-22
|
1250
|
500
|
30
|
|
8993
|
TAJINDER
|
SALESMAN
|
8888
|
1992-03-11
|
3300
|
210
|
10
|
mysql>
SELECT * FROM EMP
WHERE HIREDATE>='1991-12-30';
|
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
|
8993
|
TAJINDER
|
SALESMAN
|
8888
|
1992-03-11
|
3300
|
210
|
10
|
|
8999
|
HARPREET
|
CLERK
|
8878
|
1992-03-20
|
300
|
100
|
20
|
Wednesday, March 13, 2013
Utility softwares
Many software which are required day to day life can be downloaded from the link
http://www.filehippo.com/
http://www.filehippo.com/
creating MySql tables
mysql> CREATE DATABASE BANK ;
Query OK, 1 row affected (0.00 sec)
mysql> USE BANK ;
Database changed
mysql> CREATE TABLE EMP
-> (
-> EMPNO INTEGER,
-> ENAME CHAR(15),
-> JOB CHAR(15),
-> MGR INTEGER,
-> HIREDATE DATE,
-> SAL INTEGER,
-> COMM INTEGER,
-> DEPTNO INTEGER ) ;
Query OK, 0 rows affected (0.07 sec)
mysql> INSERT INTO
EMP VALUES(8369,'SMITH','CLERK',8902,'1990-12-18',800,100,20);
Query OK, 1 row affected (0.04 sec)
mysql> SELECT * FROM EMP ;
EMPNO
|
ENAME
|
JOB
|
MGR
|
HIREDATE
|
SAL
|
COMM
|
DEPTNO
|
8369
|
SMITH
|
CLERK
|
8902
|
1990-12-18
|
800
|
100
|
20
|
8499
|
ANYA
|
SALESMAN
|
8698
|
1991-02-20
|
1600
|
300
|
30
|
8521
|
SETH
|
SALESMAN
|
8698
|
1991-02-22
|
1250
|
500
|
30
|
8566
|
MAHADEVAN
|
MANAGER
|
8839
|
1991-04-02
|
2985
|
200
|
20
|
8698
|
BINA
|
MANAGER
|
8839
|
1991-05-01
|
2850
|
400
|
30
|
8839
|
AMIR
|
MANAGER
|
8840
|
1991-11-18
|
3000
|
200
|
10
|
8993
|
TAJINDER
|
SALESMAN
|
8888
|
1992-03-11
|
3300
|
210
|
10
|
8999
|
HARPREET
|
CLERK
|
8878
|
1992-03-20
|
300
|
100
|
20
|
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A Potential Showdown: Kamala Harris vs. Donald Trump As the political landscape gears up for the next election cycle, the prospect of a fa...
-
getText() :- This method is used to retrieve (or receive) the text of a component like Text Feild at run time e.g : name.getText(); ...
-
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { System.exit(0); ... -
mysql> UPDATE EMP SET SAL =850 WHERE SAL =800; Query OK, 1 row affected (0.10 sec) Rows matched: 1 Changed: 1 Warnings: 0SELEC...