If you have to read delimited file in Java and parse it then you can do it using the following two ways- 1- Using Scanner class with useDelimiter() method. 2- Read file using BufferedReader line by line and then split each line using split() method. Using Scanner class to read…
If you have to read input from console in Java there are 3 options. Using BufferedReader class. See example. Using Scanner class, available from Java 5. See example. Using System.console() method, available from Java 6. See example. Using BufferedReader class By wrapping the standard input stream “System.in” in an InputStreamReader…
Some times you may need to list all the files in a directory to get a specific file, to read all the files or to zip a folder where you need to go through the whole folder tree structure. This post shows how you can list all the files and…
When you zip a file in Java there are different logic based on whether you are zipping a file or you are zipping a folder in Java where the whole directory structure is archived. But unzipping a file in Java doesn’t need such different functionalities. One Java program to unzip…
In the post How to Zip Files in Java we have seen how to zip a single file or multiple files in Java but you may also need to zip a folder in Java where you also retain the folder tree structure while zipping it. This post shows how to…
This post shows how you can zip files in Java. Using the options given here you can zip a single file or more than one file by specifying all those files. Zip a file in Java To zip files in Java there are two options- Using ZipOutputStream and ZipEntry classes…
This post shows how you can convert float to String in Java. Converting float to String using Float.toString() method Wrapper class Float in Java has a toString() method that returns a string representation of the passed float argument. public class FloatToString { public static void main(String[] args) { float val…
In this post we’ll see how to convert double to int in Java. Considerations while converting double to int in Java While converting double to int two things you need to consider are- Range of double is much more than the int, if the double you are trying to convert…
This post shows how you can convert double to String in Java. Converting double to String using Double.toString() method Wrapper class Double in Java has a toString() method that returns a string representation of the passed double argument which can be used to convert double to String in Java. public…
To convert String to double in Java you can use one of the following options- Double.parseDouble(String s)– Returns a new double initialized to the value represented by the specified String. Throws NumberFormatException if the string does not contain a parsable double. Double.valueOf(String s)– Returns a Double object holding the double…
