Core Java, Vol. 2: Advanced Features - download pdf or read online

By Cay S. Horstmann

ISBN-10: 0132354764

ISBN-13: 9780132354769

ISBN-10: 0132354799

ISBN-13: 9780132354790

ISBN-10: 0137144482

ISBN-13: 9780137144488

ISBN-10: 6176713447

ISBN-13: 9786176713449

This can be a very good guide, advisor you thru proposal with strong examples. As a server-side developer, i'm engaged on a few Swing code, after looking out plenty of articles and books, i locate this publication offers me top consultant.

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114. 115. /** 116. * Writes employee data to a print writer 117. * @param out the print writer 118. */ 119. public void writeData(PrintWriter out) 120. { 121. GregorianCalendar calendar = new GregorianCalendar(); 122. setTime(hireDay); 123. YEAR) + "|" 124. DAY_OF_MONTH)); 125. } 126. 127. /** 128. * Reads employee data from a buffered reader 129. * @param in the scanner 130. */ 131. public void readData(Scanner in) 132. { 133. nextLine(); 134. split("\\|"); 135. name = tokens[0]; 136. parseDouble(tokens[1]); 137.

That is, we can only read bytes and byte arrays from the object fin . read(); As you will see in the next section, if we just had a DataInputStream , then we could read numeric types: DataInputStream din = . readDouble(); But just as the FileInputStream has no methods to read numeric types, the DataInputStream has no method to get data from a file. Java uses a clever mechanism to separate two kinds of responsibilities. Some streams (such as the FileInputStream and the input stream returned by the openStream method of the URL class) can retrieve bytes from files and other more exotic locations.

Therefore, you might expect that there is an analog to the DataInputStream that lets you read data in text format. The closest analog is the Scanner class that we used extensively in Volume I. 0, the only game in town for processing text input was the BufferedReader class—it has a method, readLine , that lets you read a line of text. You need to combine a buffered reader with an input source. txt")); The readLine method returns null when no more input is available. = null) { do something with line } However, a BufferedReader has no methods for reading numbers.

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Core Java, Vol. 2: Advanced Features by Cay S. Horstmann


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