import java.io.File;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String [] args){
File file=new File("E:/myEclipse/workspace/ccccc/src");
String [] list=file.list();
String type="java";
Pattern p=Pattern.compile(".*\\.(?i)"+type);
for(String a:list){
Matcher m1 = p.matcher(a);
while(m1.find()){
System.out.println(m1.group());
}
}
}
}