blocks|key|3023794|text|Java+applet确实会带来安全风险，因此在大多数现代浏览器中都会被禁用。你必须降低安全性才能运行它。有一个guide+by+Oracle可以解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3023795|entityMap|0|LINK|mutability|MUTABLE|url|http://www.java.com/en/download/help/jcp_security.xml^0|1K|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Java applets do create a security risk, hence are disabled in most modern browsers. You have to lower the security to run it. There is a <a href="http://www.java.com/en/download/help/jcp_security.xml" rel="nofollow">guide by Oracle</a> for that.

blocks|key|190047|text|在阅读了Java+7+Update+21+Security+Improvements+in+Detail+之后提到..|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|190048|190049|对于引入的更改，很可能没有最终用户能够在自签名或未签名的情况下运行您的应用程序。|blockquote|190050|190051|190052|..I想知道如何处理松散的类文件--所有“最简单”的applet。|190053|本地文件系统|190054|190055|190056|190057|📷|atomic|190058|您的安全设置已阻止本地应用程序运行|190059|这是当设置为默认的“高”安全设置时，从JRE本地文件系统加载的由松散类文件组成的小程序所显示的对话框。|style|BOLD|190060|190061|注意，JRE的一个小问题只在的第3点产生。|190062|190063|加载小程序页面以查看指向空控制台的损坏的小程序符号。|ordered-list-item|190064|190065|打开Java设置并将级别设置为Medium。|190066|关闭browser+&+Java+settings.|190067|Load小程序页面以查看小程序。|unordered-list-item|190068|190069|打开Java设置并将级别设置为High。|190070|关闭浏览器&+Java+settings.|190071|Load小程序页面以查看损坏的小程序符号&上面的dialog.|190072|190073|互联网|190074|如果您从internet加载在此resizable+applet+demo中看到的简单小程序(松散类文件)-它拥有以下applet元素：|CODE|190075|<applet
++++code="PlafChanger.class"
++++codebase="."
++++alt="Pluggable+Look'n'Feel+Changer+appears+here+if+Java+is+enabled"
++++width='100%25'
++++height='250'>
Pluggable+Look'n'Feel+Changer+appears+here+in+a+Java+capable+browser.
</applet>|code-block|syntax|javascript|190076|它似乎也加载成功。意思是：|190077|与从internet或本地服务器加载的小程序相比，从本地文件系统加载的小程序现在受到更严格的安全沙箱的约束。|190078|安全设置说明|190079|从Java+7更新51开始。|190080|190081|Very高run.|190082|High+:最安全设置-仅允许由来自可信机构的未过期证书标识的Java应用程序执行run.|190083|Medium+(最低推荐)：允许由来自可信机构的证书标识的Java应用程序执行操作-所有Java应用程序在显示安全提示后都将被允许运行。|190084|190085|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.eisele.net/2013/04/java-7-update-21-security-improvements.html|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/9985eea301d97416f574d1027feaf109.png|imageAlt|2|http://pscode.org/test/resize/^0|4|1D|0|0|0|0|0|0|0|0|0|0|0|0|1|1|0|0|3|P|0|0|0|0|0|0|F|6|0|0|0|0|F|4|0|0|K|B|0|0|0|4|8|1N|6|G|L|2|0|0|0|Z|J|0|0|0|0|0|9|0|0|19|0|0|13|0|0^^$0|@$1|2|3|4|5|6|7|2S|8|@]|9|@$A|2T|B|2U|1|2V]]|C|$]]|$1|D|3|-4|5|6|7|2W|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|2X|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|2Y|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|2Z|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|30|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|31|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|32|8|@]|9|@]|C|$]]|$1|O|3|-4|5|G|7|33|8|@]|9|@]|C|$]]|$1|P|3|-4|5|6|7|34|8|@]|9|@]|C|$]]|$1|Q|3|R|5|S|7|35|8|@]|9|@$A|36|B|37|1|38]]|C|$]]|$1|T|3|U|5|6|7|39|8|@]|9|@]|C|$]]|$1|V|3|W|5|6|7|3A|8|@$A|3B|B|3C|X|Y]]|9|@]|C|$]]|$1|Z|3|-4|5|6|7|3D|8|@]|9|@]|C|$]]|$1|10|3|11|5|6|7|3E|8|@]|9|@]|C|$]]|$1|12|3|-4|5|6|7|3F|8|@]|9|@]|C|$]]|$1|13|3|14|5|15|7|3G|8|@]|9|@]|C|$]]|$1|16|3|-4|5|6|7|3H|8|@]|9|@]|C|$]]|$1|17|3|18|5|6|7|3I|8|@$A|3J|B|3K|X|Y]]|9|@]|C|$]]|$1|19|3|1A|5|6|7|3L|8|@]|9|@]|C|$]]|$1|1B|3|1C|5|1D|7|3M|8|@]|9|@]|C|$]]|$1|1E|3|-4|5|6|7|3N|8|@]|9|@]|C|$]]|$1|1F|3|1G|5|6|7|3O|8|@$A|3P|B|3Q|X|Y]]|9|@]|C|$]]|$1|1H|3|1I|5|6|7|3R|8|@]|9|@]|C|$]]|$1|1J|3|1K|5|1D|7|3S|8|@$A|3T|B|3U|X|Y]]|9|@]|C|$]]|$1|1L|3|-4|5|6|7|3V|8|@]|9|@]|C|$]]|$1|1M|3|1N|5|6|7|3W|8|@]|9|@]|C|$]]|$1|1O|3|1P|5|6|7|3X|8|@$A|3Y|B|3Z|X|Y]|$A|40|B|41|X|1Q]]|9|@$A|42|B|43|1|44]]|C|$]]|$1|1R|3|1S|5|1T|7|45|8|@]|9|@]|C|$1U|1V]]|$1|1W|3|1X|5|6|7|46|8|@]|9|@]|C|$]]|$1|1Y|3|1Z|5|6|7|47|8|@$A|48|B|49|X|Y]]|9|@]|C|$]]|$1|20|3|21|5|6|7|4A|8|@]|9|@]|C|$]]|$1|22|3|23|5|6|7|4B|8|@]|9|@]|C|$]]|$1|24|3|-4|5|6|7|4C|8|@]|9|@]|C|$]]|$1|25|3|26|5|1D|7|4D|8|@$A|4E|B|4F|X|Y]]|9|@]|C|$]]|$1|27|3|28|5|1D|7|4G|8|@$A|4H|B|4I|X|Y]]|9|@]|C|$]]|$1|29|3|2A|5|1D|7|4J|8|@$A|4K|B|4L|X|Y]]|9|@]|C|$]]|$1|2B|3|-4|5|6|7|4M|8|@]|9|@]|C|$]]|$1|2C|3|-4|5|6|7|4N|8|@]|9|@]|C|$]]]|2D|$2E|$5|2F|2G|2H|C|$2I|2J]]|2K|$5|2L|2G|2M|C|$2N|2O|2P|-4]]|2Q|$5|2F|2G|2H|C|$2I|2R]]]]

After reading <a href="http://blog.eisele.net/2013/04/java-7-update-21-security-improvements.html" rel="noreferrer">Java 7 Update 21 Security Improvements in Detail </a> mention..
<blockquote>
With the introduced changes it is most likely that no end-user is able to run your application when they are either self-signed or unsigned.
</blockquote>
..I was wondering how this would go for loose class files - the 'simplest' applets of all.
<h2>Local file system</h2>
<blockquote>
<img src="https://i.stack.imgur.com/X7PAR.png" alt="Dialog: Your security settings have blocked a local application from running" />
 Your security settings have blocked a local application from running
</blockquote>
That is the dialog seen for an applet consisting of loose class files being loaded off the local file system when the JRE is set to the default 'High' security setting.
<hr />
Note that a slight quirk of the JRE only produced that on point 3 of.
<ol>
<li>Load the applet page to see a broken applet symbol that leads to an empty console.
 Open the Java settings and set the level to Medium.
 Close browser &amp; Java settings.</li>
<li>Load the applet page to see the applet.
 Open the Java settings and set the level to High.
 Close browser &amp; Java settings.</li>
<li>Load the applet page to see a broken applet symbol &amp; the above dialog.</li>
</ol>
<h2>Internet</h2>
If you load the simple applet (loose class file) seen at this <a href="http://pscode.org/test/resize/" rel="noreferrer">resizable applet demo</a> off the internet - which boasts an <code>applet</code> element of:
<pre class="lang-html prettyprint-override"><code>&lt;applet
 code=&quot;PlafChanger.class&quot;
 codebase=&quot;.&quot;
 alt=&quot;Pluggable Look'n'Feel Changer appears here if Java is enabled&quot;
 width='100%'
 height='250'&gt;
&lt;p&gt;Pluggable Look'n'Feel Changer appears here in a Java capable browser.&lt;/p&gt;
&lt;/applet&gt;
</code></pre>
It also seems to load successfully. Implying that:-
Applets loaded from the local file system are now subject to a stricter security sandbox than those loaded from the internet or a local server.
<h2>Security settings descriptions</h2>
As of Java 7 update 51.
<ul>
<li>Very High: Most secure setting - Only Java applications identified by a non-expired certificate from a trusted authority will be allowed to run.</li>
<li>High (minimum recommended): Java applications identified by a certificate from a trusted authority will be allowed to run.</li>
<li>Medium - All Java applications will be allowed to run after presenting a security prompt.</li>
</ul>

blocks|key|2811157|text|我今天遇到了同样的问题，通过将Java控制面板上的安全设置从HIGH更改为MEDIUM，我解决了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2811158|好吧，不建议将Java安全设置永久设置为“中”，因为这将允许潜在的恶意软件在您的系统上运行，而不会被阻止。因此，我建议在运行小程序后，您可能希望将设置改回HIGH。|2811159|Location+of+the+Java+Control+Panel|2811160|Change+the+setting+of+the+Control+Panel+|2811161|entityMap|0|LINK|mutability|MUTABLE|url|http://www.java.com/en/download/help/jcp_security.xml#control%2520panel|1|http://www.java.com/en/download/help/jcp_security.xml^0|U|4|11|6|0|0|0|Y|0|0|0|14|1|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|J|3|K|5|6|7|15|8|@]|D|@$9|16|A|17|1|18]]|E|$]]|$1|L|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]|T|$5|O|P|Q|E|$R|U]]]]

I faced the same issue today, and I was able to fix the issue by changing the security settings on the Java Control Panel from <code>HIGH</code> to <code>MEDIUM</code>.

Well, setting the Java Security Setting to MEDIUM permanently is not really recommended as this will allow potentialy malicious software to run on your system and not be blocked. So I suggest after running your applet you may want to change back the setting to HIGH.

<a href="http://www.java.com/en/download/help/jcp_security.xml#control%20panel" rel="noreferrer">Location of the Java Control Panel</a>

<a href="http://www.java.com/en/download/help/jcp_security.xml" rel="noreferrer">Change the setting of the Control Panel </a>

blocks|key|192611|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|192612|转到控制面板|ordered-list-item|192613|双击|192614|打开安全选项卡|192615|选择Medium|192616|单击Apply|192617|Restart您的web浏览器|192618|192619|就这样!|192620|​|192621|📷|atomic|offset|length|192622|192623|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/e90ad633c3720559c6ea213172434fb9.png|imageAlt^0|0|0|0|0|0|0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|18|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|19|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|1A|7|@]|8|@]|9|$]]|$1|H|3|I|4|C|6|1B|7|@]|8|@]|9|$]]|$1|J|3|K|4|C|6|1C|7|@]|8|@]|9|$]]|$1|L|3|M|4|C|6|1D|7|@]|8|@]|9|$]]|$1|N|3|-4|4|5|6|1E|7|@]|8|@]|9|$]]|$1|O|3|P|4|5|6|1F|7|@]|8|@]|9|$]]|$1|Q|3|R|4|5|6|1G|7|@]|8|@]|9|$]]|$1|S|3|T|4|U|6|1H|7|@]|8|@$V|1I|W|1J|1|1K]]|9|$]]|$1|X|3|R|4|5|6|1L|7|@]|8|@]|9|$]]|$1|Y|3|-4|4|5|6|1M|7|@]|8|@]|9|$]]]|Z|$10|$4|11|12|13|9|$14|15|16|-4]]]]

<ol>
<li>Go to Control Panel</li>
<li>Double click on Java</li>
<li>Open the Security tab</li>
<li>Select Medium</li>
<li>Click on Apply</li>
<li>Restart your web browser </li>
</ol>

That's it!

<img src="https://i.stack.imgur.com/nMs2Q.png" alt="enter image description here">

blocks|key|190100|text|如果您使用的是Linux，则可以使用/usr/bin/jcontrol+(或者使用path设置来获取当前的Java工具)来使用这些设置。您也可以在~/.java/deployment/deployment.properties中编辑文件以设置"deployment.security.level=MEDIUM“。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|190101|令人惊讶的是，Oracle网站上并不能很容易地获得这些信息。我想java.sun.com..。|190102|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Linux^0|I|H|21|14|7|5|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

If you are using <a href="http://en.wikipedia.org/wiki/Linux">Linux</a>, these settings are available using <code>/usr/bin/jcontrol</code> (or your path setting to get the current Java tools). You can also edit the files in <code>~/.java/deployment/deployment.properties</code> to set "deployment.security.level=MEDIUM".

Surprisingly, this information is not readily available from the Oracle web site. I miss java.sun.com...

blocks|key|190462|text|如果您和我一样，其Java+Control+Panel+没有在Security+Tab下显示Security滑块以将安全级别从高更改为中，那么请遵循以下说明：Java+known+bug:+security+slider+not+visible。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|190463|190464|症状：|190465|190466|安装后，用于启用/禁用Java的复选框和安全级别滑块不会出现在Java控制面板的安全选项卡中。使用7u10或更高版本时可能会出现这种情况。|blockquote|190467|190468|原因|190469|190470|这是由于Java7u10及以上版本与JavaFX的独立安装存在冲突。示例:如果安装了Java7u5和JavaFX+2.1.1，并且Java更新为7u11，则Java控制面板不会显示复选框或安全滑块。|190471|190472|190473|分辨率|190474|190475|建议先卸载所有版本的Java和JavaFX，然后再安装Java+7u10及以上版本。|190476|190477|请按照以下步骤解决此问题。|190478|1.通过Windows卸载控制面板删除所有版本的Java和JavaFX。有关uninstalling+Java的说明。|190479|2.运行Microsoft卸载实用程序以修复损坏的注册表项，这些注册表项会阻止程序被完全卸载或阻止新的安装和更新。|190480|3.下载并安装Windows+offline+installer包。|190481|entityMap|0|LINK|mutability|MUTABLE|url|http://www.java.com/en/download/help/jcp_securityslider.xml|1|http://www.java.com/en/download/help/uninstall_java.xml|2|http://www.java.com/en/download/windows_offline.jsp^0|S|S|27|17|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|12|H|1|0|0|F|H|2|0^^$0|@$1|2|3|4|5|6|7|1K|8|@$9|1L|A|1M|B|C]]|D|@$9|1N|A|1O|1|1P]]|E|$]]|$1|F|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|G|3|H|5|6|7|1R|8|@]|D|@]|E|$]]|$1|I|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1T|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1V|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|1X|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|U|3|V|5|6|7|20|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|21|8|@]|D|@]|E|$]]|$1|X|3|Y|5|L|7|22|8|@]|D|@]|E|$]]|$1|Z|3|-4|5|6|7|23|8|@]|D|@]|E|$]]|$1|10|3|11|5|6|7|24|8|@]|D|@]|E|$]]|$1|12|3|13|5|6|7|25|8|@]|D|@$9|26|A|27|1|28]]|E|$]]|$1|14|3|15|5|6|7|29|8|@]|D|@]|E|$]]|$1|16|3|17|5|6|7|2A|8|@]|D|@$9|2B|A|2C|1|2D]]|E|$]]|$1|18|3|-4|5|6|7|2E|8|@]|D|@]|E|$]]]|19|$1A|$5|1B|1C|1D|E|$1E|1F]]|1G|$5|1B|1C|1D|E|$1E|1H]]|1I|$5|1B|1C|1D|E|$1E|1J]]]]

If you are like me whose Java Control Panel does not show Security slider under Security Tab to change security level from High to Medium then follow these instructions: <a href="http://www.java.com/en/download/help/jcp_securityslider.xml" rel="nofollow">Java known bug: security slider not visible</a>.

<hr>

<h3>Symptoms:</h3>

<blockquote>
 After installation, the checkbox to enable/disable Java and the security level slider do not appear in the Java Control Panel Security tab. This can occur with 7u10 and above. 
</blockquote>

<h3>Cause</h3>

<blockquote>
 This is due to a conflict that Java 7u10 and above have with standalone installations of JavaFX. 
 Example: If Java 7u5 and JavaFX 2.1.1 are installed and if Java is updated to 7u11, the Java Control Panel does not show the checkbox or security slider.
</blockquote>

<h3>Resolution</h3>

<blockquote>
 It is recommended to uninstall all versions of Java and JavaFX before installing Java 7u10 and above. 
 Please follow the steps below for resolving this issue. 
 1. Remove all versions of Java and JavaFX through the Windows Uninstall Control Panel. Instructions on <a href="http://www.java.com/en/download/help/uninstall_java.xml" rel="nofollow">uninstalling Java</a>. 
 2. Run the Microsoft uninstall utility to repair corrupted registry keys that prevents programs from being completely uninstalled or blocking new installations and updates. 
 3. Download and install the Windows <a href="http://www.java.com/en/download/windows_offline.jsp" rel="nofollow">offline installer</a> package.
</blockquote>

blocks|key|190104|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|190105|从Java+8开始，在Java+|unordered-list-item|190106|下的安全选项卡中没有"medium“风险设置您会一直收到此错误，直到您恢复到较旧的Java+(建议使用Java7，因为浏览器仍然是32位和64位版本，因为浏览器仍然是32位的，即使在64位计算机，64位OS|190107|上也是如此|190108|entityMap^0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|J|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|K|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|L|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|M|7|@]|8|@]|9|$]]|$1|H|3|-4|4|5|6|N|7|@]|8|@]|9|$]]]|I|$]]

<ul>
<li>Starting with Java 8, there is no "medium" risk setting in the Security tab under Java</li>
<li>You will keep getting this error till you revert to older Java (suggested Java 7, it has hit the end of life though).</li>
<li>Install both 32-bit and 64-bit version because browsers are still 32-bit, even on a 64-bit machine, 64-bit OS</li>
</ul>

blocks|key|190110|text|我的问题案例是使用Java8在本地运行portecle.jnlp文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|190111|对我起作用的是|190112|190113|Start+Programs+-->+Java+-->+Configure+Java...|ordered-list-item|190114|转到安全-->编辑站点列表...|190115|Add+http://portecle.sourceforce.net|offset|length|190116|Start+javaws+portecle.jnlp+in+CMD+prompt|190117|190118|在第3步中，您可能还会尝试添加file:///c:/path/portecle.jnlp，，但此添加对我的情况没有帮助。|190119|entityMap|0|LINK|mutability|MUTABLE|url|http://portecle.sourceforce.net/^0|0|0|0|0|0|4|V|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|13|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|14|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|15|8|@]|9|@$L|16|M|17|1|18]]|A|$]]|$1|N|3|O|5|G|7|19|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

My problem case was to run portecle.jnlp file locally using Java8.

What worked for me was

<ol>
<li>Start Programs --> Java --> Configure Java...</li>
<li>Go to Security --> Edit Site List...</li>
<li>Add <a href="http://portecle.sourceforce.net" rel="nofollow noreferrer">http://portecle.sourceforce.net</a></li>
<li>Start javaws portecle.jnlp in CMD prompt</li>
</ol>

On step 3, you might try also to add file:///c:/path/portecle.jnlp, but this addition didn't help with my case.

blocks|key|2811218|text|我正在使用一本较旧的数据结构和Algs书，这本书附带了Java+Applets用于练习。所以我需要在本地存储和运行一些applet。我目前运行的是Windows+10操作系统以及Edge、Chrome和IE+11。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2811219|运行小程序似乎只允许在IE11中运行，正如其他人所提到的，您必须将小程序添加到例外列表中。我的问题是，由于我将这些文件存储在本地，并在IE中打开它们，它以"C:...“开头的路径打开。使用“file/...”添加完整路径就像在其他答案中提到的那样，对我来说不起作用。|2811220|解决方法:因此，我只是在异常站点列表中添加了(不带引号)+"file:///“”，并最终使其正常工作。这还允许我运行存储在本地的任何小程序，并且不必显式地为每个小程序路径添加异常。|2811221|我计划在使用完程序后将异常从列表中删除，并仅在必要时将其添加回来。|2811222|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I am using an older Data Structure and Algs book that comes with Java Applets for practice. So I needed to store and run some applets locally. I am currently running Windows 10 OS with Edge, Chrome, and IE 11. 

Running applets seem to only be allowed in IE11, and as other have mentioned you have to add the applet to the exception list. My issue was since I am storing these locally, and opening them in IE, it opened with path starting with "C:\..." Adding the full path using, "file///..." like mentioned in one of the other answers didn't work for me. 

The fix:
So, I just added(without the quotes), "file:///" to the exception site list and finally got it working. This also allows me to run any applet stored locally, and I do not have to explicitly add an exception for each applet path.

I plan to remove the exception from the list once I am done using the programs, and only add it back as necessary.

I'm trying to run this simple HelloWorld code written in Java from my browser (<a href="http://en.wikipedia.org/wiki/Google_Chrome">Chrome</a>):

<pre><code>public class HelloWorld extends JApplet {
public void init() {
 try {
 SwingUtilities.invokeAndWait(new Runnable() {
 public void run() {
 JLabel lbl = new JLabel("Hello World");
 add(lbl);
 }
 });
 }
 catch (Exception e) {
 System.err.println("createGUI didn't complete successfully");
 }
}
</code></pre>

I compiled it with <a href="http://en.wikipedia.org/wiki/NetBeans">NetBeans</a>, and then I created a WebApplication project. The <a href="http://en.wikipedia.org/wiki/HTML">HTML</a> code that runs the applet is:

<pre><code>&lt;html&gt;
 &lt;head&gt;
 &lt;title&gt;&lt;/title&gt;
 &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;p&gt;&lt;applet code="HelloWorld" archive="applet_HelloWorld.jar" width="590" height="530"&gt;&lt;/applet&gt;&lt;/p&gt;
 &lt;/body&gt;
&lt;/html&gt;
</code></pre>

If run the applet from NetBeans it works. But when I run the HTML code by double clicking it, the following message pops up from the browser:

<blockquote>
 Your security settings have blocked a local application from running. 
</blockquote>

I tried with Internet&nbsp;Explorer and Firefox but nothing.

This message started to appear after the last update of Java. Where is the problem?

Java Error: "Your security settings have blocked a local application from running"

文件存储

数据结构

文件系统

服务器

Windows

Java

我正在尝试从我的浏览器()运行这个用Java语言编写的简单HelloWorld代码：public class HelloWorld extends JApplet {public void init() {    try {        SwingUtilities.invokeAndWait(new Runnabl...

问Java错误：“您的安全设置已阻止本地应用程序运行”
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