现在在国外大学里最流行的java学习软件,同时还有大量的example,在名为project的文件里.安装好后用bluej打开peoject的例子,可以进行你想要的任何变化.同时可以了解大量的源码

				#BlueJ package file				dependency1.from=BouncingBall				dependency1.to=Canvas				dependency1.type=UsesDependency				dependency2.from=BallDemo				dependency2.to=Canvas				dependency2.type=UsesDependency				dependency3.from=BallDemo				dependency3.to=BouncingBall				dependency3.type=UsesDependency				package.editor.height=300				package.editor.width=420				package.editor.x=101				package.editor.y=81				package.numDependencies=3				package.numTargets=3				package.showExtends=true				package.showUses=true				readme.editor.height=487				readme.editor.width=610				readme.editor.x=0				readme.editor.y=22				target1.editor.height=735				target1.editor.width=648				target1.editor.x=50				target1.editor.y=60				target1.height=50				target1.name=Canvas				target1.showInterface=false				target1.type=ClassTarget				target1.width=80				target1.x=280				target1.y=210				target2.editor.height=735				target2.editor.width=648				target2.editor.x=50				target2.editor.y=60				target2.height=50				target2.name=BallDemo				target2.showInterface=false				target2.type=ClassTarget				target2.width=80				target2.x=70				target2.y=40				target3.editor.height=735				target3.editor.width=648				target3.editor.x=50				target3.editor.y=60				target3.height=50				target3.name=BouncingBall				target3.showInterface=false				target3.type=ClassTarget				target3.width=100				target3.x=160				target3.y=120