N国■圈回国园E■副 1.2数据类型类 ava.lang包概述: 表12 java. lang包 Boolean Long StrictMath av22) B Math String Character Number StrinGbuffer Class Object System Classloader Package aval) Thread Compiler Process Threadgror Double Runtime ThreadLocal (aval) Float RuntimePermission (av22) Throwable Inheritable Thread ocal av22) Securitymanager void Integer Short Character Subset Java高级程/序投计 Java ap 图君围E翻」Java高级程序设计 Java API 1.2 数据类型类 • java. lang包概述 ：