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Java's L number (long) specification
It appears that when you type in a number in Java, the compiler automatically reads it as an integer, which is why when you type in (long) 6000000000 (not in integer's range) it will complain that 6000000000 is not an integer. To correct this, I had to specify 6000000000L . I just learned abo...
Where is the Keytool application?
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keytool is part of the standard java distribution.
In a windows 64-bit machine, you would normally find the jdk at
C:\Program Files\Java\jdk1.8.0_121\bin
It is used for managing keys and certificates you can sign things with, in your case, probably a ja...
How to read the value of a private field from a different class in Java?
... @legend you can install a security manager to forbid such access. Since Java 9, such access is not supposed to work across module borders (unless a module is open explicitly), though there’s a transitional phase regarding enforcement of the new rules. Besides that, requiring additional effort l...
Java, How do I get current index/key in “for each” loop [duplicate]
In Java, How do I get the current index for the element in Java?
7 Answers
7
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File inside jar is not visible for spring
... They are in the same jar, but I tried your solution with the same result: java.io.FileNotFoundException: class path resource [classpath*:my.config] cannot be resolved to URL because it does not exist
– BTakacs
Feb 15 '13 at 7:57
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Synthetic Class in Java
What is a synthetic class in Java? Why should it be used? How can I use it?
13 Answers
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Running JAR file on Windows
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Easiest route is probably upgrading or re-installing the Java Runtime Environment (JRE).
Or this:
Open the Windows Explorer, from the Tools select 'Folder Options...'
Click the File Types tab, scroll down and select JAR File type.
Press the Advanced button.
In the Edit File Type...
为什么你有10年经验，但成不了专家？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...状态，非要刻意学习各种新能力，把它做到96分、97分、98分……即使，这个职位对他的要求只有80分。
其实即使职场上最简单的『发邮件』『沟通电话』都有很多技巧、有很多可以提升的地方。
这些基础任务所有人都可以...
How do you Force Garbage Collection from the Shell?
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You can do this via the free jmxterm program.
Fire it up like so:
java -jar jmxterm-1.0-alpha-4-uber.jar
From there, you can connect to a host and trigger GC:
$>open host:jmxport
#Connection to host:jmxport is opened
$>bean java.lang:type=Memory
#bean is set to java.lang:type=Memor...
Java: Multiple class declarations in one file
In Java, you can define multiple top level classes in a single file, providing that at most one of these is public (see JLS §7.6 ). See below for example.
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