An infinite loop while using Scanner - java -

i want ask user whether wants create file named file.elt or not. i'm trying switch statement using scanner class.

here code:

    system.out.println("do want create file.elt? (y/n)");             stroption=sc.nextline();          outer:         while (sc.hasnext()) {             switch (stroption) {                 case "y":                 case "y":                     elements.createelements(file);                     break outer;                 case "n":                 case "n":                     system.out.println("there no file.elt created! .");                     break outer;                 default:                     system.out.println("please, type y or n.");                     stroption=sc.nextline();                     break;             }                         }         sc.close(); 

the sc object declared @ beginning of program, ask name of file.

the sc declaration is:

    string file;      scanner sc = new scanner(system.in);      system.out.println("type name of file .dat .");      file=sc.nextline(); 

the problem while loop infinite , don't know why.

you not updating stroption. should move stroption=sc.nextline(); inside while loop also, thelostmind pointed out, replace hasnext hasnextline.

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edit

you might consider switch console. also, may create confirm utility method since it's common task:

private console console;  ... console = system.console(); ... if (confirm("do want create file.elt? (y/n)")) {     elements.createelements(file); } else {     system.out.println("there no file.elt created! ."); } ...  private boolean confirm(string message) {     string answer = console.readline(message);     while (!answer.matches("[yynn]")) {         answer = console.readline("please, type y or n.");     }     return "y".equalsignorecase(answer); } 

note: doesn't work in eclipse.