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IBM SUN Java Oracle Linux

JAVA JDK Version

http://baike.baidu.com/view/25214.htm#sub5047948

版本	名称	发行日期
JDK 1.1.4	Sparkler（宝石）	1997-09-12
JDK 1.1.5	Pumpkin（南瓜）	1997-12-13
JDK 1.1.6	Abigail（阿比盖尔–女子名）	1998-04-24
JDK 1.1.7	Brutus（布鲁图–古罗马政治家和将军）	1998-09-28
JDK 1.1.8	Chelsea（切尔西–城市名）	1999-04-08
J2SE 1.2	Playground（运动场）	1998-12-04
J2SE 1.2.1	none（无）	1999-03-30
J2SE 1.2.2	Cricket（蟋蟀）	1999-07-08
J2SE 1.3	Kestrel（美洲红隼）	2000-05-08
J2SE 1.3.1	Ladybird（瓢虫）	2001-05-17
J2SE 1.4.0	Merlin（灰背隼）	2002-02-13
J2SE 1.4.1	grasshopper（蚱蜢）	2002-09-16
J2SE 1.4.2	Mantis（螳螂）	2003-06-26
Java SE 5.0 (1.5.0)	Tiger（老虎）	2004-09-30
Java SE 6.0 (1.6.0)	Mustang（野马）	2006-04
Java SE 7.0 (1.7.0)	Dolphin（海豚）	2011-07-28
Java SE 8.0 (1.8.0)	未知	2013-09(预定)

JAVA JDK 稳定版本下载 / JAVA JDK 老版本下载 / JAVA JDK 旧版本下载

http://www.oracle.com/technetwork/java/javase/archive-139210.html

http://101.96.10.75/download.oracle.com/otn/java/jdk/7u80-b15/jdk-7u80-windows-x64.exe

Oracle JAVA JDK 7

http://download.oracle.com/otn-pub/java/jdk/7u11-b21/jdk-7u11-windows-x64.exe
http://download.oracle.com/otn-pub/java/jdk/7u11-b21/jdk-7u11-macosx-x64.dmg
http://download.oracle.com/otn-pub/java/jdk/7u11-b21/jdk-7u11-linux-x64.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u10-b18/jdk-7u10-windows-i586.exe
http://download.oracle.com/otn-pub/java/jdk/7u10-b18/jdk-7u10-windows-x64.exe
http://download.oracle.com/otn-pub/java/jdk/7u10-b18-demos/jdk-7u10-windows-x64-demos.zip

http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-i586.rpm
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-i586.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-x64.rpm
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-x64.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-arm.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-macosx-x64.dmg
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-i586.tar.Z
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-i586.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-sparc.tar.Z
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-sparc.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-sparcv9.tar.Z
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-sparcv9.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-x64.tar.Z
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-solaris-x64.tar.gz
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-windows-i586.exe
http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-windows-x64.exe

Oracle JAVA JDK 6

http://download.oracle.com/otn/java/jdk/6u37-b06/jdk-6u37-linux-x64.bin
http://download.oracle.com/otn-pub/java/jdk/6u38-b05/jdk-6u38-linux-x64.bin
http://download.oracle.com/otn-pub/java/jdk/6u38-b05/jdk-6u38-windows-x64.exe
http://download.oracle.com/otn-pub/java/jdk/6u38-b05/jdk-6u38-windows-i586.exe

IBM JAVA JDK 6 / 7 / 8

id:siemens800@126.com

http://www.ibm.com/developerworks/java/jdk/index.html

http://www.ibm.com/developerworks/java/jdk/beta/index.html

http://www.ibm.com/developerworks/java/jdk/linux/download.html

http://publib.boulder.ibm.com/infocenter/javasdk/v6r0/index.jsp

http://publib.boulder.ibm.com/infocenter/java7sdk/v7r0/index.jsp

https://www14.software.ibm.com/webapp/iwm/web/reg/download.do?source=swg-beta-ibmjte&S_PKG=dl&lang=en_US&cp=UTF-8

SDK Installable package (InstallAnywhere)
ibm-java-x86_64-sdk-ea-8.0-0.0.bin (119 MB)
SDK tgz package (InstallAnywhere)
ibm-java-sdk-ea-8.0-0.0-x86_64-archive.bin (119 MB)

Java SE Version 6

Download Plug-in support Web Start support

64-bit AMD/Opteron/EM64T	SR7	No	Yes
32-bit x86	SR7	Yes	Yes
32-bit IBM POWER	SR7	Yes	Yes
64-bit IBM POWER	SR7	Yes	Yes
31-bit System z	SR7	No	No
64-bit System z	SR7	No	No
WebSphere Real Time V2 for RT Linux on 32-bit x86	SR2	No	No
WebSphere Real Time V2 for Linux on 32-bit x86	SR2	No	No
WebSphere Real Time V2 for Linux on 64-bit x86	SR2	No	No

J2SE Version 5.0

Platform Download Plug-in support Web Start support

64-bit AMD/Opteron/EM64T	SR11-FP1	No	Yes
32-bit x86	SR11-FP1	Yes	Yes
32-bit IBM POWER	SR11-FP1	Yes	Yes
64-bit IBM POWER	SR11-FP1	Yes	Yes
31-bit System z	SR11-FP1	No	No
64-bit System z	SR11-FP1	No	No
WebSphere Real Time V1.0 32-bit x86	SR3	No	No

J2SE Version 1.4.2

Platform Download Plug-in support Web Start support

64-bit AMD/Opteron/EM64T	SR13 FP4	No	Yes
32-bit x86	SR13 FP4	Yes	Yes
32-bit IBM POWER	SR13 FP4	No	No
64-bit IBM POWER	SR13 FP4	No	No
31-bit System z	SR13 FP4	No	No
64-bit System z	SR13 FP4	No	No

SR13 FP4 is Service Refresh 13 Fix Pack 4. See the FAQ Java Service Refreshes and Service Refresh Fix Packs for more information.

J2SE 1.4.1 has been replaced by J2SE 1.4.2. There will be no further 1.4.1 updates.

J2SE Version 1.3.1

Platform Download Plug-in support Web Start support

32-bit x86	SR11	No	No
32-bit IBM POWER	SR11	No	No
31-bit System z	SR11	No	No

Java7带来的新的语言特性

http://www.iteye.com/topic/1111973

1。二进制字面量值

// An 8-bit 'byte' value:

Java代码

byte aByte = ( byte )0b00100001;
// A 16-bit 'short' value:
short aShort = ( short )0b1010000101000101;
// Some 32-bit 'int' values:
int anInt1 = 0b10100001010001011010000101000101;
int anInt2 = 0b101;
int anInt3 = 0B101; // The B can be upper or lower case.
// A 64-bit 'long' value. Note the "L" suffix:
long aLong = 0b1010000101000101101000010100010110100001010001011010000101000101L;

2.可以在数字字面量中使用"下划线"("_")

Java代码

long creditCardNumber = 1234_5678_9012_3456L;
long socialSecurityNumber = 999_99_9999L;
float pi = 3 .14_15F;
long hexBytes = 0xFF_EC_DE_5E;
long hexWords = 0xCAFE_BABE;
long maxLong = 0x7fff_ffff_ffff_ffffL;
byte nybbles = 0b0010_0101;
long bytes = 0b11010010_01101001_10010100_10010010;

要注意的是，下划线放在以下几个地方是不正确的：

(1).最前面; 如_52 ，这不是数字字面量，而是也是变量名了

(2).小数点的两边; 如float pi1 = 3_.1415F 和 float pi1 = 3._1415F 都是不正确的

(3).最后面; 如int x3 = 52_;

(4).不能放在0x这样前缀的中间，如：int x5 = 0_x52;

3.可以在switch语句中使用String类型的变量

Java代码

public String getTypeOfDayWithSwitchStatement(String dayOfWeekArg) {
String typeOfDay;
switch (dayOfWeekArg) {
case "Monday" :
typeOfDay = "Start of work week" ;
break ;
case "Tuesday" :
case "Wednesday" :
case "Thursday" :
typeOfDay = "Midweek" ;
break ;
case "Friday" :
typeOfDay = "End of work week" ;
break ;
case "Saturday" :
case "Sunday" :
typeOfDay = "Weekend" ;
break ;
default :
throw new IllegalArgumentException( "Invalid day of the week: " + dayOfWeekArg);
}
return typeOfDay;
}

4.类型推断，泛型构造器和非泛型的Classes

(Type Inference and Generic Constructors of Generic and Non-Generic Classes)

首先看一个泛型构造器和类型推断的例子：

Java代码

class MyClass<X> {
<T> MyClass(T t) {
// ...
}
}

这里X是泛型类MyClass<X>的参数化类型，而T是其构造器的参数化类型。

那怎么样实例化它呢？

new MyClass<Integer>("")，这条语句创建了MyClass<Integer>一个实例，这条语句显式的指定了MyClass<X> 中的参数X的类型为Integer。同时，因为实际调用构造器时参数是String类型，所以编译器推断String就是这个T的类型,。

接下来看下面这两种例子：

1.MyClass<Integer> myObject = new MyClass<>("");

在这里例子中，编译器推断Integer为泛型类MyClass<X>正式参数化类型X的类型，推断String为该泛型类构造器的正式参数化类型T的实际类型。

2.MyClass<Integer> myObject = new <String> MyClass<>("");

在这里例子中，编译器推断Integer为泛型类MyClass<X>真是参数化类型X的类型，同时这条语句显式的指定了构造器的正式参数化类型T的实际类型。

5. Improved Compiler Warnings and Errors When Using Non-Reifiable Formal Parameters with Varargs Methods不知道怎么翻译。 “当在可变长参数方法中使用不可具体化的参数时改良的警告和错误”，行么？

6.带有资源的try语句

The try-with-resources Statement

一个带有资源的try语句就是一个声明了一个或者多个资源的 try语句，资源是指当程序结束后必须关闭的对象。带有资源的try语句保证在语句结束的时候每个资源都会被关闭(调用其close()方法)。任何实现了java.lang.AutoCloseable 或者 java.io.Closeable接口的对象都可以被用作为一个资源。

下面这个例子的作用是从一个文件中读取第一行。使用了一个BufferedReader从文件中读取数据，在这里BufferedReader就是一个在程序结束后必须关闭的资源。

Java代码

static String readFirstLineFromFile(String path) throws IOException {
try (BufferedReader br = new BufferedReader( new FileReader(path))) {
return br.readLine();
}
}

上面说到可以在try语句中声明一个或多个资源，下面就是一个声明了多个资源的try语句，它的功能是获得打包在zip文件中的所有文件的文件名，然后把这些文件名保存到一个txt文件中。

Java代码

public static void writeToFileZipFileContents(String zipFileName, String outputFileName)
throws java.io.IOException {
java.nio.charset.Charset charset = java.nio.charset.Charset.forName("US-ASCII" );
java.nio.file.Path outputFilePath = java.nio.file.Paths.get(outputFileName);
// Open zip file and create output file with try-with-resources statement
try (
java.util.zip.ZipFile zf = new java.util.zip.ZipFile(zipFileName);
java.io.BufferedWriter writer = java.nio.file.Files.newBufferedWriter(outputFilePath, charset)
) {
// Enumerate each entry
for (java.util.Enumeration entries = zf.entries(); entries.hasMoreElements();) {
// Get the entry name and write it to the output file
String newLine = System.getProperty("line.separator" );
String zipEntryName = ((java.util.zip.ZipEntry)entries.nextElement()).getName() + newLine;
writer.write(zipEntryName, 0 , zipEntryName.length());
}
}
}

大家需要知道的是，一个带有资源的try语句和普通的try语句一样可以有catch和finally语句块，但是任何catch或者finally块都是在所有的资源关闭后才执行的。

7.捕捉复合（Multiple）异常类型以及使用改良的类型检查重掷（Rethrowing）异常

在Java6以及以前版本一般我们这样捕获多个类型的异常：

Java代码

catch (IOException ex) {
logger.log(ex);
throw ex;
catch (SQLException ex) {
logger.log(ex);
throw ex;
}

在Java7里可以这么干：

Java代码

catch (IOException|SQLException ex) {
logger.log(ex);
throw ex;
}

下面看一个抛出异常的例子：

JDK6及以前版本:

Java代码

static class FirstException extends Exception { }
static class SecondException extends Exception { }
public void rethrowException(String exceptionName) throws Exception {
try {
if (exceptionName.equals( "First" )) {
throw new FirstException();
} else {
throw new SecondException();
}
} catch (Exception e) {
throw e;
}
}

JDK7:

Java代码

public void rethrowException(String exceptionName)
throws FirstException, SecondException {
try {
// ...
}
catch (Exception e) {
throw e;
}
}

Java7异常新特性之mutilcatch

http://c-zhiwu.iteye.com/blog/975253

Java7增强了Java的异常处理机制，主要表现为三个方面：捕捉多种异常类型（multicatch）；重新抛出(rethrow)异常；简化资源清理（try-with-resources）

捕捉多种异常类型

从Java7开始，你就可以在一个catch块中捕捉多种类型的异常了。增加multicatch的特性的主要是为了降低重复代码和较少过大范围的异常捕捉(例如这样的捕捉 catch（Exception e）)。

假如你正开发这样一个应用程序，这个程序可以灵活地将数据复制到数据库或者文件中，清单1（CopyToDatabaseOrFile.java）模拟了这种程序，展示了在catch模块中存在重复代码的现象：

Java代码

// CopyToDatabaseOrFile.java
import java.io.IOException;
import java.sql.SQLException;
public class CopyToDatabaseOrFile {
public static void main(String[] args) {
try {
copy();
} catch (IOException ex) {
System.out.println(ex.getMessage()); // additional handler code
} catch (SQLException ex) {
System.out.println(ex.getMessage()); // additional handler code that's identical to the previous handler's // code
}
}
static void copy() throws IOException, SQLException {
if (Math.random() < 0.5 )
throw new IOException( "cannot copy to file" );
else
throw new SQLException( "cannot copy to database" );
}
}