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top -c command in linux to filter processes listed based on processname
...he o key and then type in a filter expression. For example, to monitor all java processes use the filter expression COMMAND=java. You can add multiple filters by pressing the key again, you can filter by user with the u key, and you can clear all filters with the = key.
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What is the difference between atomic / volatile / synchronized?
...p a thread that is running forever without any use and Stopping a specific java thread.
AtomicInteger
private AtomicInteger counter = new AtomicInteger();
public int getNextUniqueIndex() {
return counter.getAndIncrement();
}
The AtomicInteger class uses CAS (compare-and-swap) low-level CPU op...
.gitignore is ignored by Git
...sh removing files from .gitignore file."
// For example, if you want the .java type file to be tracked again,
// The command should be:
// git add -f *.java
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How to use JUnit to test asynchronous processes
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If you use a CompletableFuture (introduced in Java 8) or a SettableFuture (from Google Guava), you can make your test finish as soon as it's done, rather than waiting a pre-set amount of time. Your test would look something like this:
CompletableFuture<String> fu...
Hibernate: “Field 'id' doesn't have a default value”
...LT CHARSET=latin1;
Here's the Entity
package com.keyes.jpa;
import java.io.Serializable;
import javax.persistence.*;
import java.math.BigInteger;
/**
* The persistent class for the parkingsupplier database table.
*
*/
@Entity
@Table(name = "supplier")
public class supplier implements Se...
How can I find the latitude and longitude from address?
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It throws the "java.io.IOException service not available"
– Kandha
Aug 26 '10 at 13:02
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Converting many 'if else' statements to a cleaner approach [duplicate]
...OGG(); break;
}
}
And have a look at the Stack Overflow question Java - Convert String to enum on how to convert Strings to enums.
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How to set environment variables in Jenkins?
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I just needed to set up JAVA_HOME environment variable and this answer was the one that helped me.
– Sandoval0992
Jan 11 '19 at 10:24
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How would you go about parsing Markdown? [closed]
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I released a new parser-based Markdown Java implementation last week, called pegdown.
pegdown uses a PEG parser to first build an abstract syntax tree, which is subsequently written out to HTML. As such it is quite clean and much easier to read, maintain and exten...
Why should I use Hamcrest-Matcher and assertThat() instead of traditional assertXXX()-Methods
When I look at the examples in the Assert class JavaDoc
7 Answers
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