File基本操作

src/chapter7/Example03.java

@@ -0,0 +1,16 @@
+package chapter7;
+
+import java.io.File;
+
+public class Example03 {
+    public static void main(String[] args) {
+        File file = new File("src/chapter7");
+        if (file.isDirectory()) {
+            System.out.println("是目录");
+            String[] names = file.list();
+            for (String name : names) {
+                System.out.println(name);
+            }
+        }
+    }
+}