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SEARCH KEYWORD -- JAVA APPLICATION MAINTENANCE

  Different ways to print "Hello world" in Java

This post is not about best practice to print "Hello world" in Java, it is about exploring different capabilities offered by Java. Also there are articles about printing "Hello world" in different programming languages, but this post is not about that. Standard literal The most commonly used way is to use System.out to print"Hello world". System.out.println("Hello world"); Enumeration An enumeration can define a set of values belonging to one category. For example, an enumeration for all months ...

   JAVA,FEATURE     2016-05-21 21:49:48

  30 minutes to fix Java vulnerability

On September 25, Adam Gowdiak from the Polish security consulting firm Security Explorations submitted a Java security vulnerability to Oracle and provided a proof-of-concept. The vulnerability exists in Java 5 6,7, once the user accesses hosted malware site, an attacker can remotely control the infected machine.Gowdiak later got in touch again with Oracle and got the response that the fix has reached the final stage. He can expect the patch in four months later. He eventually unbearable Oracle'...

   Java, Vulnerability,Fix     2012-10-29 11:53:43

  Java AbstractMethodError explained and demonstrated

According to Oracle Java API documentation, AbstractMethodError is a kind of runtime error where the application is having some incompatible changes which leads to a missing implementation of an abstract method. Below is the official description. Thrown when an application tries to call an abstract method. Normally, this error is caught by the compiler; this error can only occur at run time if the definition of some class has incompatibly changed since the currently executing method was last co...

   JAVA,ABSTRACTMETHODERROR     2016-07-22 22:03:20

  Oracle released an urgent Java patch

On March 23, Oracle just released an urgent Java patch which is out of its normal update schedule. The security vulnerability is related to the Java SE running in web browsers on desktops. The CVE ID for this issue is CVE-2016-0636. With the unpatched Java, attackers can remotely exploit the target system without username and credentials. Successful exploits can impact the availability, integrity, and confidentiality of the user's system. When the user access pages containing malicious code...

   JAVA,SECURITY,ORACLE,NEWS     2016-03-25 08:39:59

  Different module types in Java 9

Java 9 is going to introduce a disruptive change to the Java platform -- Module System. The module system will change how Java applications work in the future. It's like changing the foundation of a house without impacting the house functionality and its top level structure. This obviously is a big challenge for the whole Java community.  To bring as little pain as possible to migrate existing applications to Java 9 without refactoring the whole application, Java 9 will introduce a few diff...

   JAVA,JAVA 9,JIGSAW,MODULE SYSTEM,UNNAMED MODULE,AUTOMATIC MODULE,NAMED MODULE     2016-04-15 07:15:23

  Check file readability in Java

File operation is quite platform dependent. Although Java is a cross platform programming language, the file operation in Java is also platform dependent. The obvious evidence is the file permission check. In Java, we can call canRead(), canWrite() and canExecutable() to check whether the program can read, write or execute the file specified. However, on Windows, when we call canRead() on a File object, we may get unexpected result. Actually, on Windows, when we call canRead() on a File object, ...

   Java,Files,Readable,Check     2013-12-05 06:10:15

  Is Java the platform of the future?

I've mentioned before, but I think we are living in a period of time where a bigger explosion of programming languages is occurring than at any time in the past four decades. Having lived through a number of the classic languages such as BASIC, Simula, Pascal, Lisp, Prolog, C, C++ and Java, I can understand why people are fascinated with developing new ones: whether it's compiled versus interpreted, procedural versus functional, languages optimised for web development or embedded devices,...

   Java,Platform,Future     2012-04-03 12:59:52

  Access control in Java -- Permission check order

Previously we showed you how to turn on SecurityManager in Java. After SecurityManager is turned on, a series of permission checks will be applied on the code you are calling in your application to protect some resources against malicious access such as files, sockets etc. To perform these permission checks, a set of Permissions will be created and checked using the AccessController. The AccessController has three purposes : To decide whether an access to a critical system resource is to be all...

   JAVA,SECURITY,ACCESSCONTROLLER     2016-03-07 04:17:40

  Different types of keystore in Java -- JCEKS

JCEKS stands for Java Cryptography Extension KeyStore and it is an alternative keystore format for the Java platform. Storing keys in a KeyStore can be a measure to prevent your encryption keys from being exposed. Java KeyStores securely contain individual certificates and keys that can be referenced by an alias for use in a Java program. The process of storing and loading different entries in JCEKS is similar to what JKS does. So please refer to the article Different types of keystore in Java -...

   Java,KeyStore,JCEKS,Tutorial     2015-01-05 00:30:56

  New features in Java 9

Java 9 is planned to be released in March 2017. It will be 3 years since Java 8 was released. Are you still excited about the new features introduced in Java 8 such as Lambda, new Date APIs etc? Now Java 9 is to be released and there are also quite a few fantastic new features to be introduced. Below is a list of major new features in Java 9. Modular system. Java 9 will introduce a brand new modular system to organize Java codes. The modular system will divide different packages into diffe...

   JAVA,NEW FEATURE,JAVA 9     2016-04-05 09:56:01

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