木子月

Lixm Studio

日志

关于我

子月

文章分类

JDK7 安装并调试一个 java 程序

2013-06-03 08:58:23| 分类：程序 | 标签： |举报 |字号大中小订阅

下载LOFTER 我的照片书 |

第一步：下载 jdk-7-linux-i586.tar.gz

第二步：解压安装

cd /usr/lib sudo mkdir jvm

sudo tar zxvf jdk-7-linux-i586.tar.gz -C /usr/lib/jvm cd /usr/lib/jvm sudo mv jdk1.7.0/ java-7-sun

第三步：修改环境变量

vim ~/.bashrc

（如果没有安装vim先执行：sudo apt-get install vim）

export JAVA_HOME=/usr/lib/jvm/java-7-sun export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH

加到末尾

保存退出

source ~/.bashrc

第四步：配置默认JDK版本

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-7-sun/bin/java 300 sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-7-sun/bin/javac 300 sudo update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/java-7-sun/bin/jar 300

检查

sudo update-alternatives --config java

java version "1.7.0_01" Java(TM) SE Runtime Environment (build 1.7.0_01-b08) Java HotSpot(TM) Client VM (build 21.1-b02, mixed mode)

第六步：测试

package ubuntu.java.basic;

import java.util.*;

public class ArrayTest {

public static void main(String[] args) {

int[] a = new int[5];

for ( int i=0;i<a.length;i++)

a[i] = i*i;

System.out.println(Arrays.toString(a));

String[] b = {"hello","world","hi","you","good"};

System.out.println(Arrays.toString(b));

}

$ cd JavaTrain
~/JavaTrain$ ls
~/JavaTrain$ ls
ArrayTest.java

~/JavaTrain$ javac -d . ArrayTest.java
~/JavaTrain$ ls
ArrayTest.java ubuntu

~/JavaTrain$ java ubuntu.java.basic.ArrayTest
[0, 1, 4, 9, 16]
[hello, world, hi, you, good]

评论这张

转发至微博

阅读(215)| 评论(0)

历史上的今天

this.p={  m:2,
              b:2,
              loftPermalink:'',
              id:'fks_087065093094083075081080080069072084086068085080095068085',
              blogTitle:'JDK7 安装并调试一个 java 程序',
              blogAbstract:'<li style=\"padding: 3px 0px; margin: 0px; list-style: none; text-indent: 20px; font-family: 微软雅黑, Verdana, sans-serif, 宋体; font-size: 13px; line-height: normal;\"   \><a style=\"padding: 0px; margin: 0px; outline: 0px; text-decoration: none; background-color: rgb(255, 255, 255);\" rel=\"nofollow\" href=\"http://my.oschina.net/vanchan/blog/133376#OSC_h2_1\"   \><font color=\"#000000\"   \>第一步：下载 jdk-7-linux-i586.tar.gz</font\></a\></li\><li style=\"padding: 3px 0px; margin: 0px; list-style: none; text-indent: 20px; font-family: 微软雅黑, Verdana, sans-serif, 宋体; font-size: 13px; line-height: normal;\"   \><a style=\"padding: 0px; margin: 0px; outline: 0px; text-decoration: none; background-color: rgb(255, 255, 255);\" rel=\"nofollow\" href=\"http://my.oschina.net/vanchan/blog/133376#OSC_h2_2\"   \></a\></li\>',
              blogTag:'java',
              blogUrl:'blog/static/277169712013538582387',
              isPublished:1,
              istop:false,
              type:0,
              modifyTime:1377967186267,
              publishTime:1370221103087,
              permalink:'blog/static/277169712013538582387',
              commentCount:0,
              mainCommentCount:0,
              recommendCount:0,
              bsrk:-100,
              publisherId:0,
              recomBlogHome:false,
              currentRecomBlog:false,
              attachmentsFileIds:[],
              vote:{},
              groupInfo:{},
              friendstatus:'none',
              followstatus:'unFollow',
              pubSucc:'',
              visitorProvince:'',
              visitorCity:'',
              visitorNewUser:false,
              postAddInfo:{},
              mset:'000',
              mcon:'',
              srk:-100,
              remindgoodnightblog:false,
              isBlackVisitor:false,
              isShowYodaoAd:false,
              hostIntro:'',
              hmcon:'1',
              selfRecomBlogCount:'0',
              lofter_single:'<iframe width="140" height="560" style="overflow:hidden;" src="http://www.lofter.com/mailEntry.do?blogad=1&blog" frameBorder="0"></iframe>'
            }

{list a as x}
    {if !!x}
    <div class="iblock nbw-fce nbw-f40">
      <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.visitorName}/">
      {if x.visitorName==visitor.userName}
      <img alt="${x.visitorNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.visitorName)}&r=${visitor.imageUpdateTime}"/>
      {else}
      <img alt="${x.visitorNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.visitorName)}"/>
      {/if}
      </a>
      <div class="cwd vname thide">
        {if x.moveFrom=='wap'}
          <a class="noul pnt" target="_blank" href="http://blog.163.com/services/wapblog.html?frompersonalbloghome"><span title="来自网易手机博客" class="iblock wapIcon"> </span></a>
        {elseif x.moveFrom=='iphone'}
          <a class="noul pnt" target="_blank"><span title="来自iPhone客户端" class="iblock iphoneIcon"> </span></a>
        {elseif x.moveFrom=='android'}
          <a class="noul pnt" target="_blank"><span title="来自Android客户端" class="iblock androidIcon"> </span></a>
        {elseif x.moveFrom=='mobile'}
          <a class="noul pnt" target="_blank" href="http://blog.163.com/services/emsblog.html?frompersonalbloghome"><span title="来自网易短信写博" class="iblock wapIcon"> </span></a>
        {/if}
        <a class="fc03 m2a"  target="_blank" hidefocus="true" href="http://blog.163.com/${x.visitorName}/">
          ${fn(x.visitorNickname,8)|escape}
        </a>
      </div>
    </div>
    {/if}
    {/list}

<#--最新日志，群博日志--> <#--推荐日志-->

<p class="fc06">推荐过这篇日志的人：</p>
    <div>
      {list a as x}
      {if !!x}
      <div class="iblock nbw-fce nbw-f40">
        <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.recommenderName}/">
        <img alt="${x.recommenderNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.recommenderName)}"/>
        </a>
        <div class="cwd thide">
          <a class="fc03 m2a" target="_blank" hidefocus="true" href="http://blog.163.com/${x.recommenderName}/">
            ${fn(x.recommenderNickname,6)|escape}
          </a>
        </div>
      </div>
      {/if}
      {/list}
    </div>
    {if !!b&&b.length>0}
    <p  class="fc06">他们还推荐了：</p>
    <ul>
    {list b as y}
      {if !!y}
        <li class="rrb"><span class="iblock">·</span><a class="fc03 m2a" target="_blank" href="http://blog.163.com/${y.recommendBlogPermalink}/?from=blog/static/277169712013538582387">${y.recommendBlogTitle|escape}</a></li>
      {/if}
    {/list}
    </ul>
    {/if}

<#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇，下一篇--> <#-- 热度 -->

{list a as x}
    {if !!x}
    <div class="hotItem iblock nbw-fce nbw-f40">
      <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/">
      {if x.publisherUsername==visitor.userName}
      <img alt="${x.publisherNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.publisherUsername)}&r=${visitor.imageUpdateTime}"/>
      {else}
      <img alt="${x.publisherNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.publisherUsername)}"/>
      {/if}
      </a>
      <div class="cwd vname thide">
        <a class="fc03 m2a"  target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/">
          ${fn(x.publisherNickname,8)|escape}
        </a>
      </div>
      <a class="f-myLikeIcons hottype {if x.type==1} js-liketype{elseif x.type==2} js-reblogtype{elseif x.type==3} js-sharetype{else}{/if}" target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/"> </a>
    </div>
    {/if}
    {/list}

<#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->

页脚

我的照片书 - 手机博客 - 下载LOFTER APP - 订阅此博客

木子月

导航

日志

JDK7 安装并调试一个 java 程序

历史上的今天

最近读者

热度

评论

页脚