Java String replace Code
How to remove XML special characters from Java String with Example
There are two approaches to replace XML or HTML special characters from Java String, First, Write your own function to replace XML special characters or use any open source library which has already implemented it. Luckily there is one very common open source library which provides function to replace special characters from XML String is Apache commons lang’s StringEscapeUtils class which provide escaping for several languages like XML, SQL and HTML. you can use StringEscapeUtils to convert XML special character in String to there escaped equivalent. I personally like to use open source code instead of reinventing the wheel to avoid any testing efforts.
Java String is Special
A Java String contains an immutable sequence of Unicode characters. Unlike C/C++, where string is simply an array of char, A Java String is an object of the class java.lang. Java String is, however, special. Unlike an ordinary class:
Why String is immutable or final
This is one of the most popular String Interview questions in Java, which starts with discussion of, What is String, How String in Java is different than String in C and C++, and then shifted towards what is immutable object in Java , what are the benefits of immutable object , why do you use it and which scenarios do you use it. This is some time also asked as "Why String is final in Java".
Java String class or object
Strigns are sequence of characters in any language. For java, sequence of characters are stored in the form of java.lang.String object.
Strings are immutable objects, meaning once created, the contents of the string, can not be modified in memory that means string objects are readonly.
How to convert Java Collection to comma separated String
Many times we need to convert any Collection like Set or List into String like comma separated or any other delimiter delimited String. Though this is quite a trivial job for a Java programmer as you just need to Iterate through loop and create a big String where individual String are separated by delimiter, you still need to handle cases like last element should not have delimiter or at bare minimum you need to test that code.
Strings in Java
This article explains how String are handled in Java. It provides deep insight on how String objects can be manipulated using variuos methods provided by String class.
Strings in Java
The String class is commonly used for holding and manipulating strings of text in Java programs. It is found in the standard java.lang package which is automatically imported, so you don't need to do anything special to use it.
In its simplest form, you use the String class by typing some text surrounded by double quotes. This is called a String literal.
This Java book is a collection of notes and sample codes written by the author while he was learning Java himself. It covers topics related Java language core features and classes provided in the java.lang.* package: array, bit, byte, deadlock, expression, main method, synchronization, string, thread.
Strings, which are widely used in Java programming, are a sequence of characters. In the Java programming language, strings are objects.
The Java platform provides the String class to create and manipulate strings.
How to encode decode String in Java base64 Encoding
Converting String into Base64 Encoding is quite easy in Java when you use Apache Common Codec Library. Other alternatives of converting byte array to base64 encoded string is MimeUtil or Base64Encoder in Sun.
How to create Anonymous Array in Java with Sample Code
Anonymous Array in Java are used to implement variable argument methods in Java.anonymous array are created and initialized at same time. here we have example of String anonymous array and int array.
Java Program to compare String
Simple Example of comparing two Strings in Java. There are 4 ways you can compare two Strings in Java e.g. equals, equalsIgnoreCase, compareTo and compareToIgnoreCase. you can even write comparator to compare Strings in java.
Why String is Immutable in Java?
This is an old yet still popular question. There are multiple reasons that String is designed to be immutable in Java. A good answer depends on good understanding of memory, synchronization, data structures, etc. In the following, I will summarize some answers.
StringBuilder vs StringBuffer vs String.concat - done right
Concatenation of Strings is very easy in Java - all you need is a '+'. It can't get any easier than that, right? Unfortunately there are a few pitfalls. One thing you should remember from your first Java lessons is a small albeit important detail: String objects are immutable. Once constructed they cannot be changed anymore.
What is polymorphism in Java? Method overloading or overriding?
Polymorphism is an important Object oriented concept and widely used in Java and other programming language. Polymorphism in java is supported along with other concept like Abstraction, Encapsulation and Inheritance. Few words on historical side; Polymorphism word comes from ancient Greek where poly means many so polymorphic are something which can take many form. In this Java Polymorphism tutorial we will see what is Polymorphism in Java , How Polymorphism is implemented in Java e.g method overloading and overriding, why should we use Polymorphism and how can we take advantage of polymorphism while writing code in Java. Along the way we will also see a real world example of using Polymorphism in Java.
Convert a Hex String to an Integer and Back Again
Have you ever wanted to convert a hex string to an integer or convert an integer to a hex string? Java makes this conversion a simple process. This Java tutorial shows you how.
Convert a Hex String to an Integer and Back Again in Java
Have you ever wanted to convert a hex string to an integer or convert an integer to a hex string? Java makes this conversion a simple process. This tutorial shows you how.
How to Set Path for Java in Windows
In this Java PATH tutorial we will see what is PATH for Java, How to Set Path for Java and how to troubleshoot PATH related issues.
PATH is one of fundamental Environment variable on shell or DOS but it’s commonly associated with Java mainly because if we try to run a java program which doesn't include Java executable in PATH then we say PATH is not set for Java and we need to set path for Java. I have also seen developer getting confused over path and classpath in java.
Convert a String to Number
This Java tutorial will show you how to convert a string to different number types. Each number type in Java has a parse method that allows you convert a string into the primitive type.
The java.lang.StringBuilder.append(String str) method appends the specified string to this character sequence.The characters of the String argument are appended, in order, increasing the length of this sequence by the length of the argument.