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How to obtain the start time and end time of a day?

...lusive while the ending is exclusive. The current date-time frameworks of Java (java.util.Date/Calendar and Joda-Time) both use milliseconds from the epoch. But in Java 8, the new JSR 310 java.time.* classes use nanoseconds resolution. Any code you wrote based on forcing the milliseconds count of l...
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Unable to install Maven on Windows: “JAVA_HOME is set to an invalid directory”

... The problems are to do with your paths. Make sure that the directory "E:\java resources\apache-maven-2.2.0\bin" is on your command search path. Make sure that the JAVA_HOME variable refers to the home directory for your Java installation. If you are executing Java from "E:\Sun\SDK\jdk\bin", then...
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How to set JAVA_HOME environment variable on Mac OS X 10.9?

... Literally all you have to do is: echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile and restart your shell. If you have multiple JDK versions installed and you want it to be a specific one, you can use the -v flag to java_home like so: echo e...
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How do I find where JDK is installed on my windows machine?

... If you are using Linux/Unix/Mac OS X: Try this: $ which java Should output the exact location. After that, you can set JAVA_HOME environment variable yourself. In my computer (Mac OS X - Snow Leopard): $ which java /usr/bin/java $ ls -l /usr/bin/java lrwxr-xr-x 1 root wheel...
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How can I use pointers in Java?

I know Java doesn't have pointers, but I heard that Java programs can be created with pointers and that this can be done by the few who are experts in java. Is it true? ...
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javac : command not found

I have installed java in my CentOS release 5.5 machine using the command yum install java . But I am unable to compile a class using javac. ...
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How to set JAVA_HOME in Linux for all users

I am new to Linux system and there seem to be too many Java folders. 20 Answers 20 ...
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What are the differences between “generic” types in C++ and Java?

Java has generics and C++ provides a very strong programming model with template s. So then, what is the difference between C++ and Java generics? ...
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How to compare dates in Java? [duplicate]

How do I compare dates in between in Java? 11 Answers 11 ...
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What is the native keyword in Java for?

While playing this puzzle (It's a Java keyword trivia game), I came across the native keyword. 10 Answers ...