I'm using Selenium in Eclipse to automate the sending of commands to a website through JAVA files. On this site, I need to check dates. I did so to test:
element = driver.findElement(By.name("form:dtEmissao_input"));
element.sendKeys("01/04/2016");
element = driver.findElement(By.name("form:emissFim_input"));
element.sendKeys("12/04/2016");
However, I wanted him to always get the first and last day of the previous month. How can I do this? Need to import some library into my JAVA file?
You do not need any external libraries! Here is a possible solution
public static voi main(String[] args){
Calendar c = Calendar.getInstance();
Date d = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
d = c.getTime();
//subtrai 1 do mês atual para pegar o anterior
c.add(Calendar.MONTH, -1);
//seta primeiro dia do mês
c.set(Calendar.DAY_OF_MONTH, c.getActualMinimum(Calendar.DAY_OF_MONTH));
d = c.getTime();
System.out.println("Data do primeiro dia do mes passado: " + sdf.format(d));
//seta ultimo dia do mês
c.set(Calendar.DAY_OF_MONTH, c.getActualMaximum(Calendar.DAY_OF_MONTH));
d = c.getTime();
System.out.println("Data do ultimo dia do mes passado: " + sdf.format(d));
}
In Java 8 this is trivial because it is part of the API.
LocalDateTime data = LocalDateTime.now();
LocalDateTime ultimoDiaDoMesAnterior = data.minusMonths(1).with(TemporalAdjusters.lastDayOfMonth());
System.out.println(ultimoDiaDoMesAnterior.format(DateTimeFormatter.ofPattern("dd/MM/yyyy")));
Note that LocalDateTime does not consider timezone, so it is safer than using Date or Calendar .