add int to jFrame

TestApplication/src/TestPackage/NewClass.java

@@ -0,0 +1,13 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package TestPackage;
+
+/**
+ *
+ * @author Андрей
+ */
+public class NewClass {
+    public int foo;
+}

TestApplication/src/TestPackage/TestJFrame.java

@@ -16,6 +16,7 @@ public class TestJFrame extends javax.swing.JFrame {
     public TestJFrame() {
         initComponents();
     }
+    public int fooJFrame;
 
     /**
      * This method is called from within the constructor to initialize the form.