import java.util.TreeMap; public class Example { public static void main(String[] args) { TreeMaptreeMap = new TreeMap<>(); treeMap.put("one", 1); treeMap.put("two", 2); treeMap.put("three", 3); System.out.println(treeMap); } }
import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Paths; import java.io.IOException; import java.util.List; public class Example { public static void main(String[] args) { try { ListPackage library: java.nio.filelines = Files.readAllLines(Paths.get("file.txt"), StandardCharsets.UTF_8); for(String line: lines) { System.out.println(line); } } catch(IOException e) { e.printStackTrace(); } } }