java - how to make search jtextfield like jcombobox -

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i working on project make database application in java swing.

i want set a jtextfield search box of browser. want typed first character , data appear

so want this? i'm sure can use build towards objective (just needs few edits/adds/changes).

public static void main(string[] args) {      scanner scanner = new scanner(system.in);      string datainput;      system.out.println("what search for? ");     datainput = scanner.nextline();     // imagine database involves usernames of various people.     string[] usernamedata = new string[] { "jack901", "chimp00" };      (string loaddata : usernamedata) {         if (loaddata.charat(0) == datainput.charat(0)) {             system.out.println(loaddata);         } else {             system.out.println("user not found.");         }      }  }

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