1.1Java语言历史及发展 版本之间的差别 Java 1.02 Java 1.02 Java 2 Java 5 250 classes 500 classes 2500 classes 3500 classes slow a little faster much faster lots of bugs friendlier, becomi powerful power, easier to develop wit g popular languages for enterprise and lots of bugs mobile applications1.1 Java语言历史及发展 ✓版本之间的差别 Java 1.02 250 classes slow lots of bugs Java 1.02 500 classes a little faster friendlier,becomi ng popular Java 2 2500 classes much faster powerful languages for enterprise and mobile applications Java 5 3500 classes more power,easier to develop with. lots of bugs