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sql delete based on date

I am a total noob to java and sqlite. This should be simple, but I have tried and searched and can't get it to work. I have a date field in SQL that I am formatting as a sql date (MM/dd/yy). I want to delete based on a date passed. For the moment, I am only trying to display rows based on a passed date.
My code to run the query is:
String query = "select * from Peter1Score where DateSort='"+convertSQLDate("09/20/15")+"'";
PreparedStatement pst = connection.prepareStatement(query);
ResultSet rs = pst.executeQuery();
My converSQLDate() is:
public static java.sql.Date convertSQLDate (String sqlDateIn)
{
java.sql.Date returnDate = null;
SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yy");
Date parsed;
try
{
parsed = formatter.parse(sqlDateIn);
java.sql.Date sqlDate = new java.sql.Date(parsed.getTime());
returnDate = sqlDate;
}
catch (ParseException e)
{
e.printStackTrace();
}
return returnDate;
}
I am passing 09/20/15 just for test. I have a record with that date, but it doesn't get selected.

You're not binding any variables into the statement (using the setXY() methods of PreparedStatement). Instead, you're concatenating a string value (result of Date.toString()) into the query literal.
Try this instead:
String query = "select * from Peter1Score where DateSort=?";
PreparedStatement pst = connection.prepareStatement(query);
pst.setDate(1, convertSQLDate("09/20/15"));

Getting java sql time and inserting it to a table

Calendar calendar = Calendar.getInstance();
java.util.Date now = calendar.getTime();
java.sql.Time currentTimestamp = new java.sql.Time(now.getTime());
Date date = new Date(currentTimestamp.getTime());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = sdf.format(date);
java.sql.Date.valueOf(formattedDate);
System.out.println(formattedDate);
How to get the current formatted System time(yyyy-MM-dd) and insert it to the table? I already tried my best and search for the answer but its no good I get different error messages like when I insert java.sql.Date.valueOf(formattedDate);I always get java.lang.IllegalArgumentException but when I remove java.sql.Date.valueOf(formattedDate) and change this line "+pcList.get(j).getid()+",0,0 into "+pcList.get(j).getid()+",0,2014-07-07 I always get an error saying Data truncation: Incorrect date value: '2000' for column 'date' at row 1
if(ifLoggedIn){
for(int j=0;j<b;j++){
try {
Connection conn = DriverManager.getConnection(url, "root", "");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT MAX(transactionID) from transaction");
while(rs.next()){
tID = rs.getInt("MAX(transactionID)");
}
tID= tID+1;
stmt.executeUpdate("Insert into ccpdb.transaction(membershipNum,productID,time,date,paymentOption,amount,transactionID,quantity) values ("+currentuser.getMembershipNum()+","+pcList.get(j).getid()+",0,0,\"west\","+tf1.getText()+","+tID+","+pcList.get(j).f3.getText()+")"
+ "");
conn.close();
} catch (Exception g) {
System.err.println("Got an exception! ");
System.err.println(g.getMessage());
}
}
}
Please help me!!

Just use the database time, rather than the java time. You can get it using the function now() or CURRENT_DATE. I can't quite tell where you want to put this in the insert, but it can go in the list of values.

Try this:
java.util.Date now = new java.util.Date();
java.sql.Date insertDate = new java.sql.Date(now.getTime());
You can insert this date directly.
You are getting this error as you are trying to save String in date column.

how to format date and time from JDateChooser to mysql datetime column

I am trying yo store current date and time from JDateChooser to mysql database, but it inserts only todays date and current time is 00:00:00
java.util.Date dt1,dt2;
String n=name.getText();
String i=id.getText();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
dt1=jDateChooser1.getDate();
dt2=jDateChooser2.getDate();
String strdtver1=(String) sdf.format(jDateChooser1.getDate());
String strdtver2=(String) sdf.format(jDateChooser2.getDate());
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con= (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/testing","root","");
Statement stmt=con.createStatement();
String sql="Insert into ss values('"+(n)+"','"+(strdtver1)+"','"+(strdtver2)+"','"+(i)+"');";
stmt.executeUpdate(sql);
JOptionPane.showMessageDialog(this, "RECORD ENTERED SUCCESSFULLY");
} catch(Exception e) {
JOptionPane.showMessageDialog(this,e.getMessage());
}
It is a program to store check in & check out date and time.
The datatype in mysql is datetime for Check_in and Check_out.
The data entered in my sql at column Check_in is 2014-10-27 00:00:00. The current date is correct but i want to insert current time instead of 00:00:00.Please help me.

Your are formatting the dates you get from widgets using SimpleDateFormat, but you only use a date pattern as a format string; for date and time string format supported by mysql, use:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

You should not convert your Date objects to Strings. Instead, pass them to a PreparedStatement:
try (PreparedStatement statement =
con.prepareStatement("insert into ss values ?, ?, ?, ?")) {
statement.setString(1, n);
statement.setDate(2, dt1);
statement.setDate(3, dt2);
statement.setString(4, i);
statement.executeUpdate();
}
Also, using a PreparedStatement is highly recommended when storing user data, as it prevents a serious malicious attack vector known as SQL Injection. (Imagine if the user entered his name as ', null, null, null; delete from ss; insert '.)

public void calendarExpale(){
JPanel content = new JPanel();
content.setLayout(new FlowLayout());
final JTextField textField = new JTextField(15);
JDateChooser chooser = new JDateChooser();
Date d1=(Date)chooser.getDate();
chooser.setSize(15, 10);
chooser.addPropertyChangeListener("date", new PropertyChangeListener() {
#Override
public void propertyChange(PropertyChangeEvent evt) {
JDateChooser chooser = (JDateChooser)evt.getSource();
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy HH:MM:SS");
textField.setText(formatter.format(chooser.getDate()));
}
});
content.add(textField);
content.add(chooser);
}

This is the easiest way I have ever used. You do not need to do any extra thing .
statement.setString(2,((JTextField) jDateChooser1.getDateEditor().getUiComponent()).getText());

How to Convert String To DateTime in java

I am trying to store date in sql server 2005
i am used "datetime" data type in sql server
and in java program i am passing string as date
ex.
String DateStr = "12/12/2013";
Date d = new Date();
java.sql.Date d1 = new java.sql.Date(d.getTime());
String sql = "INSERT INTO info (date) VALUES ( ? )";
try {
pstmt = con.prepareStatement(sql);
pstmt.setDate(1, d1);
pstmt.executeUpdate();
} catch (SQLException e) {
System.out.println("Error:" + e);
}
the above code is working...but i want to use String DateStr = "12/12/2013";
insted of d.getTime() bcoz i passed date as string to java function by using jquery datepicker

You need to use a SimpleDateFormat to parse your String to a date and then use that date.
Date d = new SimpleDateFormat("dd/MM/yyyy").parse(DateStr); // This throws a ParseException
// Rest everything stays pretty much the same
java.sql.Date d1 = new java.sql.Date(d.getTime());
...

public long convertLong(String value) {
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Date getDate = null;
long returnDate = 0l;
try {
getDate = (Date) formatter.parse(value);
returnDate = getDate.getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return returnDate;
}
Input: 12/12/2013
Output: 1386786600000

First convert string in datetime object than you can directly pass d1 to your code
String DateStr = "12/12/2013";
DateTimeFormatter formatter = DateTimeFormat.forPattern("dd/MM/yyyy ");
DateTime dt = formatter.parseDateTime(DateStr);
String sql = "INSERT INTO info (date) VALUES ( dt )";
try {
pstmt = con.prepareStatement(sql);
pstmt.setDate(1, d1);
pstmt.executeUpdate();
}
catch (SQLException e) {
System.out.println("Error:" + e);
}

wrong value when converting String date to date Object

When I convert String date like "18/09/13,02:01:51"
Using this method:
public static Date stringToDateFormat(String dateString) {
Date date = null;
try {
date = new SimpleDateFormat("dd/MM/yy,hh:mm:ss").parse(dateString);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
When I save this convert this date object to SQL Date and store it in PostgreSQL Database, I lose the time
2013-09-18 00:00:00
Here the DB insertion code"
String query = "INSERT INTO My_Table(my_date) VALUES (?)";
Date date = stringToDateFormat("18/09/13,02:01:51");
preparedStatement = connection.prepareStatement(query);
preparedStatement.setDate(1, new java.sql.Date(date.getTime()));
preparedStatement.executeUpdate();
Is it coding problem or DB configuration?
Thanks.

Your date string does not specify ms and is being rounded.
18/09/13,02:01:51 == 1379458917000
18/09/13,02:01:51.590 == 1379458917590
Update:
A format string which captures MS would be: dd/MM/yy,hh:mm:ss.SSS