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java.lang.NullPointerException: 	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)	at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:281)	at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:250)	at sun.awt.SunToolkit.getFontMetrics(SunToolkit.java:649)	at sun.awt.windows.WToolkit.getFontMetrics(WToolkit.java:644)	at processing.opengl.PJOGL.getFontMetrics(PJOGL.java:468)	at processing.opengl.PJOGL.getFontRenderContext(PJOGL.java:476)	at processing.opengl.PJOGL.access$2(PJOGL.java:475)	at processing.opengl.PJOGL$FontOutline.(PJOGL.java:695)	at processing.opengl.PJOGL.createFontOutline(PJOGL.java:686)	at processing.opengl.PJOGL.createFontOutline(PJOGL.java:1)	at processing.opengl.PGraphicsOpenGL.textCharShapeImpl(PGraphicsOpenGL.java:3680)	at processing.opengl.PGraphicsOpenGL.textCharImpl(PGraphicsOpenGL.java:3626)	at processing.core.PGraphics.textLineImpl(PGraphics.java:4984)	at processing.opengl.PGraphicsOpenGL.textLineImpl(PGraphicsOpenGL.java:3597)	at processing.core.PGraphics.textLineAlignImpl(PGraphics.java:4974)	at processing.core.PGraphics.text(PGraphics.java:4647)	at processing.core.PGraphics.text(PGraphics.java:4598)	at processing.core.PApplet.text(PApplet.java:12595)	at sketch_161001b.draw(sketch_161001b.java:31)	at processing.core.PApplet.handleDraw(PApplet.java:2412)	at processing.opengl.PSurfaceJOGL$DrawListener.display(PSurfaceJOGL.java:871)	at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:692)	at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:674)	at jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:443)	at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1293)	at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1147)	at com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:759)	at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:81)	at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:452)	at com.jogamp.opengl.util.FPSAnimator$MainTask.run(FPSAnimator.java:178)	at java.util.TimerThread.mainLoop(Timer.java:555)	at java.util.TimerThread.run(Timer.java:505)