string - How to change the dot (if more than 2) in java? -

i'd change dot "" if more 2. mean hel.lo.txt or he.l.l.o.txt returns hello.txt.

i wrote not begin end "."

int pointindex = filename.indexof("."); if (pointindex==0){          system.out.println("point index :"+pointindex);     string mystring=filename.substring(pointindex, 1);     filename=filename.replace(mystring, ""); }  //end "." int extensions = filename.lastindexof("."); string newfilename=filename.substring(extensions); system.out.println(newfilename.length()); if ( newfilename.length()<2){     system.out.println("dont have extension, filename end is"+".");     int dotidx=filename.lastindexof(".");     filename=filename.substring(0,dotidx);     system.out.println(filename); } 

you can manipulate string here

string str = "he.l.l.o.txt"; int lastindexofdot = str.lastindexof('.'); string str1 = str.substring(0, lastindexofdot + 1); string str2 = str.substring(lastindexofdot, str.length()); str = str1.replace(".", "") + str2; system.out.println(str); 

output :

hello.txt 

note: can create method take string argument , return required string.