Simple, basic but much needed things in java

It is often needed to convert one type of objects into another type in java. Below I have mentioned about these common types as they form basic foundation in java.

* How to convert String to boolean?

String listing = "true";
boolean theValue = Boolean.parseBoolean(listing);

* How to convert boolean to string?

public class BooleanToString {
public static void main(String[] args){
boolean b = true;
String s = new Boolean(b).toString();
System.out.println("String is:"+ s);
}
}

* How to converting string to date?

public class StringToDate {
public static void main(String[] args) {
try {
String str_date="11-June-07";
SimpleDateFormat formatter ;
Date date ;
formatter = new SimpleDateFormat("dd-MMM-yy");
date = (Date)formatter.parse(str_date);
System.out.println("Today is " +date );
}
catch (ParseException e)
{
System.out.println("Exception :"+e);
}
}
}

* How to convert date to string?

import java.util.*;
import java.text.*;
public class DateToString {
public static void main(String[] args) {
try {
DateFormat formatter ;
Date date ;
formatter = new SimpleDateFormat("dd-MMM-yy");
date = (Date)formatter.parse("11-June-07");
String s = formatter.format(date);
System.out.println("Today is " + s);
} catch (ParseException e)
{System.out.println("Exception :"+e); }

}
}