修改项目目录

src/chapter2/Example07.java

@@ -0,0 +1,12 @@
+package chapter2;
+
+public class Example07 {
+    public static void main(String[] args) {
+        int x = 5;
+        if (x < 10) {
+            x ++;  // x = x + 1;
+        }
+
+        System.out.println("x=" + x);
+    }
+}