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diff --git a/archived/projt-launcher/launcher/JavaCommon.h b/archived/projt-launcher/launcher/JavaCommon.h
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+++ b/archived/projt-launcher/launcher/JavaCommon.h
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+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ *  ProjT Launcher - Minecraft Launcher
+ *  Copyright (C) 2026 Project Tick
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#pragma once
+#include <java/services/RuntimeProbeTask.hpp>
+
+class QWidget;
+
+/**
+ * Common UI bits for the java pages to use.
+ */
+namespace JavaCommon
+{
+	bool checkJVMArgs(QString args, QWidget* parent);
+
+	// Show a dialog saying that the Java binary was usable
+	void javaWasOk(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result);
+	// Show a dialog saying that the Java binary was not usable because of bad options
+	void javaArgsWereBad(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result);
+	// Show a dialog saying that the Java binary was not usable
+	void javaBinaryWasBad(QWidget* parent, const projt::java::RuntimeProbeTask::ProbeReport& result);
+	// Show a dialog if we couldn't find Java Checker
+	void javaCheckNotFound(QWidget* parent);
+
+	class TestCheck : public QObject
+	{
+		Q_OBJECT
+	  public:
+		TestCheck(QWidget* parent, QString path, QString args, int minMem, int maxMem, int permGen)
+			: m_parent(parent),
+			  m_path(path),
+			  m_args(args),
+			  m_minMem(minMem),
+			  m_maxMem(maxMem),
+			  m_permGen(permGen)
+		{}
+		virtual ~TestCheck() = default;
+
+		void run();
+
+	  signals:
+		void finished();
+
+	  private slots:
+		void checkFinished(const projt::java::RuntimeProbeTask::ProbeReport& result);
+		void checkFinishedWithArgs(const projt::java::RuntimeProbeTask::ProbeReport& result);
+
+	  private:
+		projt::java::RuntimeProbeTask::Ptr checker;
+		QWidget* m_parent = nullptr;
+		QString m_path;
+		QString m_args;
+		int m_minMem  = 0;
+		int m_maxMem  = 0;
+		int m_permGen = 64;
+	};
+} // namespace JavaCommon