Here a simple Vaadin converter to format dateTime in GRID.
ConvertToModel method is not implemented because converter is not associated to any field.
How to use Grid
CustomFormatDateStringConverter dateConverter = new CustomFormatDateStringConverter();
grid.getColumn("beanDateAttr").setConverter(dateConverter);
Converter Implementation
package com.common.utils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import com.vaadin.data.util.converter.Converter;
public class CustomFormatDateStringConverter implements Converter<String, String> {
SimpleDateFormat dateParser = new SimpleDateFormat("ddMMyyyy");
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd/MM/yyyy");
@Override
public String convertToModel(String value,
Class<? extends String> targetType, Locale locale)
throws com.vaadin.data.util.converter.Converter.ConversionException {
// If using in a grid this part can be omitted
return value;
}
@Override
public String convertToPresentation(String value,
Class<? extends String> targetType, Locale locale)
throws com.vaadin.data.util.converter.Converter.ConversionException {
if (value!=null && !value.isEmpty()) {
try {
Date date = dateParser.parse(value);
value = dateFormatter.format(date);
} catch (ParseException e) {
e.printStackTrace();
}
}else{
value="";
}
return value;
}
@Override
public Class<String> getModelType() {
return String.class;
}
@Override
public Class<String> getPresentationType() {
return String.class;
}
}
