Problem with Java JDK

[dansued]

For one of my classes, I wrote a simple java program that would display a group of smiley faces in a window. I wrote this program on one of the windows machines on campus. It compiles and runs perfectly.

However, when I copy the same source files onto my computer, a problem emerges. It will compile with no error but upon running, the window that comes up is just a grey background.

My professor is guessing that either the version of java that I have is different or that the graphics library has some incompatibility. The version of java I have is 1.6.0, installed from synaptic.

If anybody has a few minutes to compile and try to run my program, it would be much appreciated. I've attached a zip with all the source files.


javac *.java
java SmileyIf it isn't immediately apparent, I have about 1 week of java experience.

[andyrobo60]

Are you running compiz fusion or something like that? I know that can cause the problem you are having when using GUIs made in java's swing.

If you are using compiz fusion, compiz or beryl try this.

http://ubuntuforums.org/showthread.php?t=362821

[dansued]

it works! or so it seems. My program works as expected but this message comes up in the terminal


Warning: Cannot convert string "-b&h-luxi sans-medium-r-normal--*-140-*-*-p-*-iso8859-1" to type FontStruct
Warning: Cannot convert string "-misc-ar pl shanheisun uni-medium-r-normal--*-*-*-*-p-*-iso10646-1" to type FontStruct

Should I just ignore this?

[andyrobo60]

I get that message as well. I just ignore it.