Posts Tagged ‘core java’

How to Redirect Standard Output/Error in Java

System.out and System.err stream objects are mapped to "standard" output and error stream respectively. By default, Java display standard output/error on display console.Thus, when we print a statement using System.out:System.out.println("Hello World!"); System.err.println("errr.. Hello World!");It prints the messages to default console.What if you want to reassign the "standard" output and error stream? Lets say you want to redirect all those standard out messages in a ...

Java MD5 Hashing & Salting: Secure Your Passwords

Java MD5 Hashing & Salting: Secure Your Passwords
The MD5 Message-Digest Algorithm is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value. MD5 has been employed in a wide variety of security applications, and is also commonly used to check data integrity. MD5 was designed by Ron Rivest in 1991 to replace an earlier hash function, MD4. An MD5 hash ...

Inner classes in Java, the mystery within.

Inner classes in Java, the mystery within.
Inner classes, also called Nested Classes, are nothing but classes that are defined within other classes. The nesting is a relationship between classes, not objects.Inner classes have clearly two benefits, name control & access control. In Java, this benefit is not as important because Java packages give the name control.Java inner classes have feature that ...