JAVA - Core JAVA Tutorials

Found 171 Tutorials

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• How to check if JVM is 32 bit or 64 bit in Java

  Quick tip to find out if JVM you are running is 64 bit or not. There are two ways to check if JVM you are running is 64 bit or not. either by using co
  http://javarevisited.blogspot.com/2012/01/find-jvm-is-32-or-64-bit-java-program.html
  
  • 2700 Hits
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• sql.Date in java

  convert java.util.Date to java.sql.date
  http://www.techlabs4u.com/2011/12/javasqldate-with-example-convert.html
  
  • 3798 Hits
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• How to Overloaded Constructor in java

  Good tutorial on What is Constructor overloading, Benefit of Constructor overloading in Java and how to do Constructor overloading in Java.
  http://javarevisited.blogspot.com/2012/01/what-is-constructor-overloading-in-java.html
  
  • 3021 Hits
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• Difference between Serializable and Externalizable Java

  There are many differences between Serialization and Externalization the way they do serialization in java. if used correctly Externalizable interface
  http://javarevisited.blogspot.com/2012/01/serializable-externalizable-in-java.html
  
  • 2980 Hits
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• How to find free memory in Java with Example

  Simple examples how freeMemory(), totalMemory() and maxMemory() function of Java runtime can be used to find memory usage in Java.
  http://javarevisited.blogspot.com/2012/01/find-max-free-total-memory-in-java.html
  
  • 2633 Hits
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• Where to use Assertion in Java Program

  Assertion in java is fairly underused feature but if used carefully can complement both Unit Testing and Exception handling. Since Assertion sits on c
  http://javarevisited.blogspot.com/2012/01/where-to-use-assertion-in-java-code.html
  
  • 2788 Hits
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• Enable Disable Assertion in Java at runtime

  Quick tip on how to disable and enable Assertion in JAva on runtime without changing code.
  http://javarevisited.blogspot.com/2012/01/enable-or-disable-assertion-in-java.html
  
  • 2642 Hits
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• Simple tips to improve performance of Java application

  Some simple tips to improve performance of Java application which uses database as back-end. These are very simple in order to follow but you can also
  http://javarevisited.blogspot.com/2012/01/improve-performance-java-database.html
  
  • 2671 Hits
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• How to Sort Array in java in ascending order Example

  quick tutorial on how to sort array in java in both ascending and descending order of elements. This is like sorting Arraylist in java after convertin
  http://javarevisited.blogspot.com/2012/01/sort-array-in-java-ascending-and.html
  
  • 2812 Hits
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• Jav aAssertion Tutorial for Beginners with Example

  Short tutorial on what is assertion in java and why should you use assertion to improve code quality
  http://javarevisited.blogspot.com/2012/01/what-is-assertion-in-java-java.html
  
  • 2545 Hits
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• How to get Unicode codepoint in Java String

  Quick way to get unicode codepoint from String in Java.CodePointAt() method of String class can be used to get unicode char
  http://javarevisited.blogspot.com/2012/01/java-string-codepoint-get-unicode.html
  
  • 2395 Hits
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• How to Set File Permissions from Java Program

  quick guide on how to set permissions on file in java. you can set read, write and execute permission. sample code is also there with example.
  http://javarevisited.blogspot.com/2012/01/change-file-permissions-java-change.html
  
  • 2557 Hits
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• REST and SOAP web service Interview Questions for prep

  REST is getting popular day by day and replacing SOAP web services which was standard earlier and Interviewer expect you to know about REST and how it
  http://javarevisited.blogspot.com/2012/01/rest-web-services-framework-interview.html
  
  • 24413 Hits
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• How to write Thread-Safe Code in Java

  Simple introduction to complex topic.Writing thread-safe code in java is bit of challenge in Java, you need to be expert in multi-threading in order t
  http://javarevisited.blogspot.com/2012/01/how-to-write-thread-safe-code-in-java.html
  
  • 3013 Hits
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• How to Sorting ArrayList in java

  Short and Quick tutorial on how to sort ArrayList in Java with sample code example. sorting arraylist is easy using Collections.sort() method. you can
  http://javarevisited.blogspot.com/2012/01/how-to-sort-arraylist-in-java-example.html
  
  • 2592 Hits
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• what is use of this keyword in Java

  this is very special keyword which can also used to synchronized block in that case that block will be locked on current instance of Class and differe
  http://javarevisited.blogspot.com/2012/01/this-keyword-java-example-tutorial.html
  
  • 3150 Hits
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• How to find current Date and time in Java

  Quick and easy way to find current date and time in Java using DateFormat and SimpleDateFormat class and converting them into different timezones like
  http://javarevisited.blogspot.com/2012/01/get-current-date-timestamps-java.html
  
  • 2323 Hits
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• How to find hidden files in Java

  quick tip to check and find hidden files in Java. you can use isHidden method of File Class to do this.
  http://javarevisited.blogspot.com/2012/01/find-hidden-files-java-example-check.html
  
  • 2382 Hits
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• How make file hidden in Java with Example

  quick tip to make any file hidden in Java or create new hidden files in Unix and windows environment. Java File API doesnt provide any direct way of
  http://javarevisited.blogspot.com/2012/01/how-to-hide-file-java-program-example.html
  
  • 3198 Hits
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• Difference between Checked and UnChecked Exception Java

  Checked and unchecked Exception are two different types of Exception in java. both are similar in functionality and you can do all things with checked
  http://javarevisited.blogspot.com/2011/12/checked-vs-unchecked-exception-in-java.html
  
  • 2894 Hits
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• How to use Observer Pattern in Java with Example

  Observer pattern in Java is one of most used core Java pattern which has heavily used in JDK and outside of JDK in various frameworks like Spring, Str
  http://javarevisited.blogspot.com/2011/12/observer-design-pattern-java-example.html
  
  • 2960 Hits
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• Difference between Overloading and Overriding in Java

  Difference between method overriding and method overloading is one of popular core java interview question which explores powerful polymorphism concep
  http://javarevisited.blogspot.com/2011/12/method-overloading-vs-method-overriding.html
  
  • 4085 Hits
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