Learn Java IO character stream from scratch lazy mode (automatic generation of attribute classes, method classes, interface classes)

usually do a project to build a lot of attribute class, method class and view class, after learning the IO stream to think of a way, is to write a string of code, and then write in the text document class < class name > plus all the attributes, Then run the code to automatically generate a < class name >.java file. Open it with a myeclipse. In the same way, you write a txt text document that has only class < class name > and another section of code that automatically generates a method class with a method class that includes additions and deletions to four simple methods, and a view class.

First of all, generate this code for the attribute class:

Package Com.jereh.generate;import Java.io.*;import java.util.*;p ublic class Generate1 {/** * @param args */public static V OID Main (string[] args) {FileReader FR = null; BufferedReader br = null; FileWriter FW = NULL;        BufferedWriter bw = Null;int i=0;        File File1 = new File ("e:\\io\\ original \\1.txt");        File file2 = null; try {stringbuffer sbff = new StringBuffer (); fr = new FileReader (file1); br = new BufferedReader (FR); String Next; while (!) ( (Next = Br.readline ()) ==null)) {if (i==0) {sbff.append ("public"); Sbff.append (next); Sbff.append ("{\ r \ n"); String[] A = Next.split (""); File2 = new File ("e:\\io\\ generated \ \" +a[1]+ ". Java");}    Else{sbff.append ("private"); Sbff.append (next+ "\ r \ n");} i++;} Sbff.append ("}"), FW = new FileWriter (file2), bw = new BufferedWriter (FW); Bw.write (sbff.tostring ());} catch (FileNotFoundException e) {//Todo auto-generated catch Blocke.printstacktrace ();} catch (IOException e) {//Todo Au To-generated catch Blocke.printstacktrace ();} Finally{try {br.clOSE (); Bw.close ();} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace ();}}}

then the code that generates the method class:

<span style= "FONT-SIZE:18PX;" >package com.jereh.generate;import java.io.bufferedreader;import Java.io.bufferedwriter;import java.io.File; Import Java.io.filenotfoundexception;import Java.io.filereader;import Java.io.filewriter;import Java.io.ioexception;public class Generate2 {public static void main (string[] args) {FileReader FR = null; BufferedReader br = null; FileWriter FW = NULL; BufferedWriter bw = NULL;        StringBuffer SBFF = new StringBuffer (); int i=0;        File File1 = new File ("e:\\io\\ original \\2.txt");        File file2 = null; try {fr = new FileReader (file1); br = new BufferedReader (FR); String Next;while (! ( (Next = Br.readline ()) ==null)) {if (i==0) {string[] a = Next.split (""); file2 = new File ("e:\\io\\ generates \ \" +a[1]+ ". Java"); Sbff.append ("public"); Sbff.append (next); Sbff.append ("{\ r \ n");} i++;} Sbff.append ("\ t public void Add () {}\r\n"); Sbff.append ("\ t public void Delete () {}\r\n"); Sbff.append ("\ t public void Update () {}\r\n "); Sbff.append (" \ t public void Search () {}\r\n "); SBFF.APpend ("}"), FW = new FileWriter (file2), bw = new BufferedWriter (FW); Bw.write (sbff.tostring ());} catch (FileNotFoundException e) {//Todo auto-generated catch Blocke.printstacktrace ();} catch (IOException e) {//Todo Au To-generated catch Blocke.printstacktrace ();} Finally{try {br.close (); Bw.close ();} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace ();}}} </span>

Finally, the code that generates the view interface:

<span style= "FONT-SIZE:18PX;" >package com.jereh.generate;import java.io.bufferedreader;import Java.io.bufferedwriter;import java.io.File; Import Java.io.filenotfoundexception;import Java.io.filereader;import Java.io.filewriter;import Java.io.ioexception;public class Generate3 {public static void main (string[] args) {FileReader FR = null; BufferedReader br = null; FileWriter FW = NULL; BufferedWriter bw = NULL;        StringBuffer SBFF = new StringBuffer (); int i=0;        File File1 = new File ("e:\\io\\ original \\3.txt");        File file2 = null; try {fr = new FileReader (file1); br = new BufferedReader (FR); String Next;while (! ( (Next = Br.readline ()) ==null)) {if (i==0) {string[] a = Next.split (""); file2 = new File ("e:\\io\\ generates \ \" +a[1]+ ". Java"); Sbff.append ("public"); Sbff.append (next); Sbff.append ("{\ r \ n");} i++;} Sbff.append ("\ t public void AddView () {}\r\n"); Sbff.append ("\ t public void Deleteview () {}\r\n"); Sbff.append ("\ t public void Updateview () {}\r\n "); Sbff.append (" \ t public void Searchview ({}\r\n "), Sbff.append (" \ t public void Main () {\ r \ n "), sbff.append (" \ t \ t \ System.out.println (); \ r \ n "); Sbff.append (" \ t \ \ T System.out.println (); \ r \ n "); Sbff.append (" \ t \ t System.out.println (); \ r \ n "); Sbff.append (" \ t \ t System.out.println ( \ r \ n "); Sbff.append (" \ t \ t System.out.println (); \ r \ n "); Sbff.append (" \ t \ t int i = input.nextint (); \ r \ n "); sbff.append ("\ t \ r \ n"); Sbff.append ("\ t \ t \ 1:\r\n"), Sbff.append ("\ t \ t \ addview (); \ r \ n"); Sbff.append ("\ t \ t BR Eak;\r\n "); Sbff.append (" \ t \ t \ Case 2:\r\n ") sbff.append (" \ t \ t Deleteview (); { \ r \ n "), sbff.append (" \ t \ t break;\r\n "), Sbff.append (" \ t \ t case 3:\r\n "), Sbff.append (" \ t \ t Updateview (); { \ r \ n "), sbff.append (" \ t \ t break;\r\n "), Sbff.append (" \ t \ t case 4:\r\n "), Sbff.append (" \ t \ t Searchview (); { \ r \ n "); Sbff.append (" \ t \ t break;\r\n "), Sbff.append (" \ t \ t default:\r\n "); Sbff.append (" \ t \ t break;{ \ r \ n "); Sbff.append (" \ t \t}\r\n "); Sbff.append (" \ t}\r\n "); Sbff.append ("} "); fw = new FileWriter (file2); bw = new BufferedwRiter (FW); Bw.write (sbff.tostring ());} catch (FileNotFoundException e) {//Todo auto-generated catch Blocke.printstacktrace ();} catch (IOException e) {//Todo Au To-generated catch Blocke.printstacktrace ();} Finally{try {br.close (); Bw.close ();} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace ();}}} </span>

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Learn Java IO character stream from scratch lazy mode (automatic generation of attribute classes, method classes, interface classes)