TALK IS CHEAP SHOW ME THE CODE!

public class Mutter {

    public static void main(String[] args) {

        String path = "C:\\book\\javabook\\Java Programmer.doc";
        System.out.println(path); // C:\book\javabook\Java Programmer.doc

        int index = path.indexOf("\\");
        System.out.println(index); // 2

        index = path.indexOf("\\", index);
        System.out.println(index); // 2

        String sub = path.substring(index);
        System.out.println(sub); // \book\javabook\Java Programmer.doc

        index = path.lastIndexOf("\\");
        System.out.println(index); // 16

        sub = path.substring(index + 1);
        System.out.println(sub); // Java Programmer.doc
        
    }

}