Submitted by heartin on Wed, 08/22/2012 - 09:21
All Unicode characters can be used in comments, character and string literals in java. Unicode characters can be expressed through Unicode Escape Sequences.
Unicode escape sequences consist of
Submitted by heartin on Wed, 08/22/2012 - 09:18
Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems. The objective of Unicode is to unify all the different encoding schemes so that the confusion between computers can be limited as much as possible. Currently the Unicode standard defines values for over 100,000 characters.
Submitted by heartin on Wed, 08/22/2012 - 09:04
Escape characters (also called escape sequences or escape codes) in general are used to signal an alternative interpretation of a series of characters. In Java, a character preceded by a backslash (\) is an escape sequence and has special meaning to the java compiler.
Submitted by heartin on Wed, 08/22/2012 - 03:59
Strings are immutable and a new String object is created every time you modify a Sring object. A StringBuffer is a thread-safe, mutable sequence of characters. A StringBuilder is similar to StringBuffer, but with no guarantee of synchronization.
Submitted by heartin on Tue, 08/21/2012 - 09:50
We will discuss String Replace and String Split in Java with some examples. String replace is the process by which we replace parts of a string with another string. Some Java methods directly accept character sequences, while some others accept a regular expression (regex). We will discuss some of these approaces using examples. String split is the process by which a string is split around a delimiter.
Submitted by heartin on Tue, 08/21/2012 - 09:12
Data with other data types can be converted to String using explicit and automatic ways in Java. Explicit String conversion ways include:
- Use of the toString() method of an object, especially wrapper classes.
- Use of the static overloaded method String.valueOf, passing in the other data type value.
- Use of a String constructor to convert a byte array as a String.
Submitted by heartin on Tue, 08/21/2012 - 08:20
String interning is a method of storing only one copy of each distinct string value, which must be immutable. The distinct values are stored in a string intern pool. The single copy of each string is called its 'intern' and is typically looked up by a method (e.g. String.intern() in Java.).
Submitted by heartin on Tue, 08/21/2012 - 08:06
The Character class is a wrapper class for the char primitive data type.
Submitted by heartin on Tue, 08/21/2012 - 04:26
We have discussed the theory about access modifiers in the previous note. This note will give you an example code that will show the valid and invalid usages for members belonging to different access levels from different regions of your code such as same class, subclass in same package, subclass in another package and a non-subclass in another package.