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Java Basics Tutorials


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How to read properties file in Java with example
How to read properties file in Java with example
Quick java tutorial to load xml properties file and read values form them.properties file in java is great way to provide configuration to java program like database connection settings while connecting from JDBC, JMS messaging settings etc. this article explains quick way of loading and reading properties file in java written in xml format.
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What is Assertion in Java with Example
What is Assertion in Java with Example
Java tutorial on what is assertion in java and why should you use assertion to improve code quality. Also Assertion in java is fairly underused feature but if used carefully can complement both Unit Testing and Exception handling. Since Assertion sits on code its gets more expose than unit testing and can test your function with more real data than one or two test data.
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How to find memory usage inside JVM
How to find memory usage inside JVM
Java tutorial on how to find memory usage in java with example. step by step guide to get free memory, max memory and total memory from JVM by using various utility method provided in Runtime class. accuracy of those method are also discussed in order to avoid misinterpretation of result.
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how to reverse string in using recursion in Java
how to reverse string in using recursion in Java
This is also a very popular java interview questions mostly asked as how to reverse string in Java without using Stringbuffer reverse but There are many different ways to solve this problem using recursion and in this article we discuss one of those way to reverse string in Java.
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Difference between Class, member and local variable in Java
Difference between Class, member and local variable in Java
Java provides different kinds of variable e.g. Class variable or Static variable, Instance variable or non static variable, Local variable. In this article we will see some difference between Class variable also called static variable and Instance variable also called non static variable in Java. indivine index
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How to compare Dates in Java with 3 Examples
How to compare Dates in Java with 3 Examples
Java provides multiple ways to compare two Dates in Java. here we will see 3 simple example to convert two dates in Java and find out whether one date is before, after or in between two dates.
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How to use blocking method in Java
How to use blocking method in Java
Java API has several blocking methods in IO, Swing and Threading which can hung the program if not used properly. its quick guide on blocking method in java.
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Why wait and notify method is in Object Class
Why wait and notify method is in Object Class
Its bee a classic Java interview questions from long time "Why wait and notify methods are in Object Class in Java" here are few reasons which make sense.
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How to convert String to Enum in Java
How to convert String to Enum in Java
Quick Java tutorial on how to convert Enum to String and String to Enum in Java.
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Difference between Checked and UnChecked Exception Java
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 exception which are possible with unchecked exception. though there are some subtle differences like for unchecked exception you don't need to add explicit try catch block which pollute code in case of checked Exception.
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Android 101 Series - Hello Android
Android 101 Series - Hello Android
The first tutorial in an ongoing series about android programming, this simple tutorial introduces you to Android programming and some basic concepts i.e. XML based layouts and event handling
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Learn Programming with Processing
Learn Programming with Processing
Processing is a higher level implementation of Java for visually-based programs and a great way to learn programming for beginners. If you want to create Java applications such as games, visualizations, GUI's, Android apps or similar program types but find Java difficult to learn Processing could be what you are looking for. This in depth documentation includes tutorials, exercises and a full course for those starting out with programming.
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How to read and write Images in Java using ImageIO utitlity
How to read and write Images in Java using ImageIO utitlity
Writing an Image file in Java is very common scenario and in this article we will see a new way to write images into file in Java. javax.imageio.ImageIO is a utility class which provides lots of utility method related to images processing in Java.
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Java TreeMap Tutorial: Master TreeMap with Example
Java TreeMap Tutorial: Master TreeMap with Example
TreeMap in Java is the best solution for Java programs which are looking for sorted datastrucutre. TreeMap in Java sort keys based on either their natural order or any custom order defined by provided comparator while creating TreeMap. If you try to store any element in TreeMap which is not of same type like earlier key you will get ClassCastException because with every new key insertion treeMap sort all the keys.
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Creating Lists Using The Android ListActivity
Creating Lists Using The Android ListActivity
Tutorial covers building lists in Android with ListView and ListActivity. Learn to create custom list layouts and displays including adding images and checkboxes to lists. Also display lists based on cursor data and adding actions to list items.
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Total Tutorials in Category: 72