栏目:Java8基础 作者:admin 日期:2015-03-31 评论:1 点击: 2,637 次

自JDK 5.0发布起,Java采用了两种升级方式,一种是Limited Update,包含新功能和非安全性修复,一种是Critical Patch Update(CPU),仅包含Bug修复和安全更新。这两种升级方式的命名规则一般是:
——Limited Update发布将以20的倍数命名。
——CPU JDK 发布采用奇数,将Limited Update版本号加上5的倍数,如果所得不是奇数就再加1。
举个例子,JDK 7的下一个Limited Update的版本号为7u40,之后的3个CPU的版本号分别时7u45、7u51、7u55。再如下一个Limited Update版本号为7u60,CPU则为7u65、7u71、7u75等。

jdk1.7 32位下载对应下面这个:
Windows x86     127.8 MB      jdk-7u75-windows-i586.exe
jdk1.7 64位下载对应下面这个:
Windows x64    129.52 MB      jdk-7u75-windows-x64.exe

http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html 。 这个页面分为两大部分:
Java SE Development Kit 7u75
Java SE Development Kit 7u75 Demos and Samples Downloads
JavaFX 2.2.75 Demos and Samples Downloads
Java SE Development Kit 7u76
Java SE Development Kit 7u76 Demos and Samples Downloads
JavaFX 2.2.76 Demos and Samples Downloads
What is the difference between a Java CPU (7u75) and PSU (7u76) release?
Java SE Critical Patch Updates (CPU) contain fixes to security vulnerabilities and critical bug fixes. Oracle strongly recommends that all Java SE users upgrade to the latest CPU releases as they are made available. Most user should choose this release.
Java SE Patch Set Updates (PSU) contain all of the security fixes in the CPUs released up to that version, as well as additional non-critical fixes. Java PSU releases should only be used if you are being impacted by one of the additional bugs fixed in that version.

jdk1.7官方下载:目前有1 条留言

  1. 沙发


    2015-04-01 下午8:59 [回复]