1 / 9

Computer Programming 2

MINISTRY OF EDUCATION & HIGHER EDUCATION COLLEGE OF SCIENCE AND TECHNOLOGY (CST) KHANYOUNIS- PALESTINE. Computer Programming 2. Lecture 6: String Processing Part c: Class StringBuffer. Prepared & Presented by: Mahmoud Rafeek Alfarra. و من يتقِ الله. ألا تكفيك هذه ؟!

graham-coleman
Télécharger la présentation

Computer Programming 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MINISTRY OF EDUCATION & HIGHER EDUCATION COLLEGE OF SCIENCE AND TECHNOLOGY (CST) KHANYOUNIS- PALESTINE Computer Programming 2 Lecture 6: String Processing Part c: Class StringBuffer Prepared & Presented by: Mahmoud Rafeek Alfarra

  2. و من يتقِ الله ... ألا تكفيك هذه ؟! (إِنَّ اللَّهَ مَعَ الَّذِينَ اتَّقَوْا وَالَّذِينَ هُمْ مُحْسِنُونَ) (النحل:128) شريحـة ثابتـة لعلنا نحسن من خلالها أخلاقنـا و أفعالنا لنفوز يوم الامتحان الحقيقي Downloaded from http://staff.cst.ps/mfarra

  3. Out Lines • What is a StringBuffer class ? • Functions of StringBuffer Class: • append() • insert() • reverse() • setCharAt() • charAt() • substring() • deleteCharAt() • length() • delete() • capacity() • setLength() • ensureCapacity() • toString() Downloaded from http://staff.cst.ps/mfarra

  4. What is a StringBuffer class ? • A Stringbuffer class implements a mutable sequence of characters. • A string buffer is like a String, but can be modified. • At any point in time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls. Downloaded from http://staff.cst.ps/mfarra

  5. Functions of StringBuffer Class • append(): is used for the concatenate the string in string buffer. • This is better to use for dynamic string concatenation. • This function works like a simple string concatenation such as : String str = str + "added string";. Downloaded from http://staff.cst.ps/mfarra

  6. String in Java • insert() • This is the insert() function used to insert any string or character at the specified position in the given string. StringBuffer buffer = new StringBuffer(“MFarra”); buffer.insert( 1, “R” ); Downloaded from http://staff.cst.ps/mfarra

  7. Class String • reverse(): used to reverse the string present in string buffer. • setLength(int newLength)Sets the length of this String buffer. • capacity()Returns the current capacity of the String buffer. Downloaded from http://staff.cst.ps/mfarra

  8. Case Study Return to chapter 29, and understand the remainder of functions Downloaded from http://staff.cst.ps/mfarra

  9. Next Lecture … Class Regular Expressions Downloaded from http://staff.cst.ps/mfarra

More Related