first commit

guiexample.java

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+import javax.swing.JOptionPane;
+class Scratch {
+    public static void main(String[] args) {
+        String name = JOptionPane.showInputDialog("What is your name?");
+        JOptionPane.showMessageDialog(null,"Hello "+name);
+        int age = Integer.parseInt(JOptionPane.showInputDialog("Enter your mental age"));
+        JOptionPane.showMessageDialog(null,"Your mental age is "+age);
+    }
+}