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http://stackoverflow.com/questions/11001252/running-out-of-heap-space issue: I am having a heap space problem. My program is simple. There are two act 阅读全文
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Adding two numbers concatenates them instead of calculating the sum JavaScript里两个变量 var a = 2; var b = 1; var c = "(" + a + b +")"; alert(c); 结果输出:(21 阅读全文
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package org.springframework.beans; public abstract class BeanUtils 我们会遇到场景:将某个Bean实例的字段全部或者拷贝到另一个Bean的实例中。 如果是项目没有使用Spring框架,我们只能免为其难,自己写了(当然我们可以把这套代码 阅读全文
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this article picked from:http://viralpatel.net/blogs/setting-tomcat-heap-size-jvm-heap-eclipse/ Recently while running Tomcat under Eclipse for one of 阅读全文
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ABSTRACT摘要Reliability at massive scale is one of the biggest challenges weface at Amazon.com, one of the largest e-commerce operations inthe world; ev 阅读全文
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Visual Studio (box selection 区块选择) ALT 鼠标点选 Eclipse(Toggle Block Selection Mode) Alt+Shift+A 鼠标点选 Notepad++ ALT Column Mode Tip Please use "ALT+Mouse 阅读全文
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public Long getCreationCounter() { String host =PropertyUtils.getPropertyValue("redis.server.host"); String port =PropertyUtils.getPropertyValue("redis.server.port"); Stri... 阅读全文
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What is a reasonable order of Java modifiers (abstract, final, public, static, etc.)? http://stackoverflow.com/questions/16731240/what-is-a-reasonable 阅读全文
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has_content It is true if the variable exists (and isn't Java null) and is not "empty", otherwise it is false. The meaning of "empty" depends on the c 阅读全文
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What Is Apache Hadoop? The Apache™ Hadoop® project develops open-source software for reliable, scalable, distributed computing. Hadoop项目是为了开发可靠、可伸缩的分布 阅读全文