Init project

AntiAirCraftGun.form

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+<?xml version="1.0" encoding="UTF-8"?>
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="AntiAirCraftGun">
+  <grid id="27dc6" row-count="1" column-count="1" layout-manager="GridLayoutManager">
+    <margin top="0" left="0" bottom="0" right="0"/>
+    <constraints>
+      <xy x="20" y="20" width="500" height="400"/>
+      <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+    </constraints>
+    <properties/>
+    <border type="none"/>
+    <children/>
+  </grid>
+</form>

AntiAirCraftGun.java

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+public class AntiAirCraftGun {
+}

Main.java

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+public class Main {
+    public static void main(String[] args){
+
+    }
+}