java - Load from file cannot be referenced from a static content -

i don't know what's wrong main class. dont know how change fix it. computer says: load file cannot referenced static context. if try change it, main class missing.

public class bsp3_1225814_3 {      public void static main(string [] args){         list<linienzug> lst = new arraylist<>();          load_from_file("c:\\users\\schurzm\\google drive\\tu\\2.semester\\vu_grundlagen programmieren\\projekte_schurz\\1225814_3\\3_in");          dump_to_file("c:\\users\\schurzm\\google drive\\tu\\2.semester\\vu_grundlagen programmieren\\projekte_schurz\\1225814_3\\3_out");     }      public void load_from_file(string file) {         scanner s = null;         try {             s = new scanner(                 new bufferedreader(new filereader(file))).usedelimiter("\\n");                 while (s.hasnext()) {                     string[] in = s.next().split(":");                     linienzug l = new linienzug();                     (int i=0; i<(in.length-1); i++){                         l.add(new punkt(integer.parseint(in[i]),                         integer.parseint(in[i+1])));                     }                     this.lst.add(l);                 }             } catch (filenotfoundexception ex) {                 system.out.print("file not found");             } {                 if (s != null) {                     s.close();                 }             }         } 

you cannot call method not have static keyword when in static method. because there implicit reference this pointer not exist in static context.