GitHub

[gui] java.lang.NullPointerException: Cannot invoke "java.awt.Rectangle.equals(Object)" because "this.bounds" is null

Program args : -Xms128M -XX:MaxRAMPercentage=70.0 -Dawt.useSystemAAFontSettings=lcd -Dswing.aatext=true -Djava.util.Arrays.useLegacyMergeSort=true -Djdk.util.zip ...
GitHub

java.awt.geom.Rectangle2D$Double cannot be cast to java.awt.Rectangle

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.awt.geom.Rectangle2D$Double cannot be cast to java.awt.Rectangle at freert.graphics ...
Ars Technica

Java Swing - show chosen rectangle

I'm learning Java by writing a Mandelbrot program. I can draw the image, then use the mouse to choose an area to magnify. Works great, except... When I choose the area to magnify (mouse down, move ...