Question

I have a file directory which could look like either

C:\projects\lab3\test\test.java

or

C:\projects\assignment3\test\test.java

But the “lab3” or “assignment3” can appear anywhere in the directory, it is not a set directory

What i want is to check to see if the directory either contains “lab” or “assignment” and get the number that follows. In this case “3”

This is what i have so far

 if(directory.toLowerCase().contains("lab")){

 } else if (directory.toLowerCase().contains("assignment")){

 }

but i do not know how to check for the char straight after the word?

Answer 1

This does what you are asking for:

String directory = "C:\\projects\\lab3\\test\\test.java";
if(directory.toLowerCase().contains("lab")){
 System.out.println(directory.substring(directory.indexOf("lab")+3,   directory.indexOf("lab")+4));

         }

The +3 parameter is because of the size of “lab” String. You can do better this way:

String directory = "C:\\projects\\lab3\\test\\test.java";
String myWord = "lab";
if(directory.toLowerCase().contains(myWord)){
  System.out.println(directory.substring(directory.indexOf(myWord)+ myWord.length(), directory.indexOf(myWord)+ myWord.length()+1));

         }