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FastJson Convert Java objects to / from JSON
FastJson provides easily APIs to convert Java objects to / from JSON
Date: 2019-08-11 View: 1520
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Java How to save a String to a File
In Java, there are many ways to write a String to a File.
Date: 2019-08-11 View: 1520
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Java Convert File to String
In Java, we have many ways to convert a File to a String.
Date: 2019-08-11 View: 1520
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Java what is -Xms and -Xmx parameter?
In Java, -Xms set initial Java heap size, while -Xmx set the maximum Java heap size.
Date: 2019-08-11 View: 1520
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Java 8 Should we close the Stream after use?
Only Streams whose source are an IO channel like Files.lines(Path, Charset) need to be closed.
Date: 2019-08-11 View: 1520
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Java Add new line in String
Different operating system has a different new line or line separator string:
Date: 2019-08-11 View: 1520
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Java How to change date format in a String
If Java 8, DateTimeFormatter, else SimpleDateFormat to change the date format in a String.
Date: 2019-08-11 View: 1520
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JDBC How to print all table names from a database?
A JDBC example to connect to a PostgreSQL, and print out all the tables from the default database postgres
Date: 2019-08-11 View: 1520
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Java Events 2019
Some Java Conferences and Events 2019.
Date: 2019-08-11 View: 1520
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Java 8 Convert LocalDateTime to Timestamp
In Java, we can use Timestamp.valueOf(LocalDateTime) to convert a LocalDateTime into a Timestamp.
Date: 2019-08-11 View: 1520
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Java 8 Stream The peek() is not working with count()?
Many examples are using the .count() as the terminal operation for .peek(), for example:
Date: 2019-08-11 View: 1520
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Java 8 Convert ZonedDateTime to Timestamp
Java example to convert java.time.ZonedDateTime to java.sql.Timestamp and vice verse.
Date: 2019-08-11 View: 1520
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Java Prime Numbers examples
The following Java examples will print a list of all the prime numbers up to 1,000:
Date: 2019-08-11 View: 1520
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Java 8 Parallel Streams Examples
Few Java 8 examples to execute streams in parallel.
Date: 2019-08-11 View: 1520
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Java Convert Integer to Long
In Java, we can use Long.valueOf() to convert an Integer to a Long
Date: 2019-08-11 View: 1520