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Adding n hours to a date in Java?
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cal.setTime(new Date()) is not needed - the javadoc of Calendar.getInstance() says: "The Calendar returned is based on the current time in the default time zone with the default locale."
– mithrandir
Dec 10 '14 at 9:54
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javac is not recognized as an internal or external command, operable program or batch file [closed]
I am experiencing an error while trying to compile Java programs.
6 Answers
6
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'Java' is not recognized as an internal or external command
When trying to check the current version of Java in which I am running, I received the error "java is not recognized as an internal or external command, operable program or batch file.".
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Java: Why is the Date constructor deprecated, and what do I use instead?
I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that Date was deprecated:
14 A...
In which language are the Java compiler and JVM written?
In which languages are the Java compiler ( javac ), the virtual machine (JVM) and the java starter written?
9 Answers
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How much faster is Redis than mongoDB?
...ps in 5.23 seconds : 19134.6 ops/sec
Completed mongo_get: 100000 ops in 36.98 seconds : 2703.9 ops/sec
Completed redis_set: 100000 ops in 6.50 seconds : 15389.4 ops/sec
Completed redis_get: 100000 ops in 5.59 seconds : 17896.3 ops/sec
Also this blog post compares both of them but using node.js. It...
hash function for string
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Nick JohnsonNick Johnson
98.3k1616 gold badges123123 silver badges195195 bronze badges
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Where is Java Installed on Mac OS X?
I just downloaded Java 7u17 on Mac OS 10.7.5 from here and then successfully installed it. In order to do some JNI programming, I need to know where Java installed on my Mac.
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What is a Java ClassLoader?
In a few simple sentences, what is a Java ClassLoader, when is it used and why?
7 Answers
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How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version
...e JRE the class file is compatible with.
The reported major numbers are:
Java SE 14 = 58,
Java SE 13 = 57,
Java SE 12 = 56,
Java SE 11 = 55,
Java SE 10 = 54,
Java SE 9 = 53,
Java SE 8 = 52,
Java SE 7 = 51,
Java SE 6.0 = 50,
Java SE 5.0 = 49,
JDK 1.4 = 48,
JDK 1.3 = 47,
JDK 1.2 = 46,
JDK 1.1 = 45
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