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Getting a File's MD5 Checksum in Java
I am looking to use Java to get the MD5 checksum of a file. I was really surprised but I haven't been able to find anything that shows how to get the MD5 checksum of a file.
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Jackson JSON custom serialization for certain fields
...xception {
jsonGenerator.writeObject(tmpInt.toString());
}
}
Java should handle the autoboxing from int to Integer for you.
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Gradle alternate to mvn install
... +--> build.gradle
root/build.gradle:
allprojects {
apply plugin: 'java'
apply plugin: 'maven'
group = 'myGroup'
version = '0.1-SNAPSHOT'
}
root/settings.gradle:
include 'sdk'
include 'example'
root/sdk/build.gradle:
dependencies {
// just an example external dep.
compile gr...
Safely casting long to int in Java
What's the most idiomatic way in Java to verify that a cast from long to int does not lose any information?
10 Answers
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What is “String args[]”? parameter in main method Java
I'm just beginning to write programs in Java. What does the following Java code mean?
16 Answers
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How do I reverse an int array in Java?
I am trying to reverse an int array in Java.
43 Answers
43
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Generate Java classes from .XSD files…?
... Unfortunately, this functionality will no longer be available as of Java 9. This is because the classes involved (in particular, the com.sun.tools.xjc.* classes) will no longer be available via the JDK.
– Marco
Jul 14 '16 at 8:18
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Java and SQLite [closed]
... What driver/connector library is out there to connect and use SQLite with Java.
10 Answers
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Getting all names in an enum as a String[]
...ream(e.getEnumConstants()).map(Enum::name).toArray(String[]::new);
}
Pre Java 8 is still a one-liner, albeit less elegant:
public static String[] getNames(Class<? extends Enum<?>> e) {
return Arrays.toString(e.getEnumConstants()).replaceAll("^.|.$", "").split(", ");
}
That you w...
Mockito: Trying to spy on method is calling the original method
...olved here: they are both static methods of Matchers. Both are said by the Javadoc to return null, which is a little difficult to get your head around in itself. Presumably the Class object passed as the parameter is examined but the result either never calculated or discarded. Given that null can s...