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Git How to undo the last commit?
In Git, we can use git reset --soft HEAD~1 to undo the last commit in local. (The committed files haven’t pushed to the remote git server)
Date: 2019-08-11 View: 2331
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Java 8 Stream.iterate examples
In Java 8, we can use Stream.iterate to create stream values on demand, so called infinite stream.
Date: 2019-08-11 View: 1953
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Java Fibonacci examples
Fibonacci number – Every number after the first two is the sum of the two preceding.
Date: 2019-08-11 View: 2231
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Java Fork/Join Framework examples
The fork/join framework is available since Java 7, to make it easier to write parallel programs. We can implement the fork/join framework by extending either RecursiveTask or RecursiveAction
Date: 2019-08-11 View: 1843
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Java ScheduledExecutorService examples
In Java, we can use ScheduledExecutorService to run a task periodically or once time after a predefined delay by TimeUnit.
Date: 2019-08-11 View: 1919
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Intellij IDEA How to show method signature?
In IDEA, clicks on the method name, press CTRL + Q to show the method signature on a pop up.
Date: 2019-08-11 View: 2245
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Java ExecutorService examples
In Java, we can use ExecutorService to create a thread pool, and tracks the progress of the asynchronous tasks with Future.
Date: 2019-08-11 View: 2008
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Java Sequence Generator examples
An example to show you how to create a thread safe sequence generator.
Date: 2019-08-11 View: 2118
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Java Semaphore examples
In Java, we can use Semaphore to limit the number of threads to access a certain resource.
Date: 2019-08-11 View: 2032
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Java – Check if a String contains a substring
In Java, we can use String.contains() to check if a String contains a substring.
Date: 2019-08-11 View: 1827
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Java BlockingQueue examples
In Java, we can use BlockingQueue to create a queue which shared by both producer and the consumer.
Date: 2019-08-11 View: 1869
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Git pull refusing to merge unrelated histories
Add --allow-unrelated-histories to solve the Git fatal error – “refusing to merge unrelated histories”
Date: 2019-08-11 View: 1796
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Python How to read a file into a list?
Python example to read a log file, line by line into a list.
Date: 2019-08-11 View: 1760
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Java How to read a file into a list?
In Java, there are few ways to read a file line by line into a List
Date: 2019-08-11 View: 2030
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Java Files.walk examples
The Files.walk API is available in Java 8, it is recommended to use try-with-resources to close the Files.walk stream.
Date: 2019-08-11 View: 1959
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