ra.util

Class Utility

java.lang.Object

ra.util.Utility

public class Utility
extends java.lang.Object

Common tool class.

Author:

Ray Li

Method Summary

Modifier and Type	Method and Description
java.lang.String	bytesToHex(byte[] bytes) Convert bytes to strings.
void	deleteFiles(java.io.File file) Delete deep files.
void	deleteFiles(java.lang.String path) Delete files.
static Utility	get() Returns instance of class Utility.
java.lang.String	getThrowableDetail(java.lang.Throwable exception) Return details of exception.
java.lang.String	prettyPrintJson(org.json.JSONArray jsonarray) A simple implementation to pretty-print JSON file.
java.lang.String	prettyPrintJson(org.json.JSONObject json) A simple implementation to pretty-print JSON file.
java.lang.String	prettyPrintJson(java.lang.String unformattedJsonString) A simple implementation to pretty-print JSON file.
java.lang.String	prettyPrintJson(java.lang.String unformattedJsonString, java.lang.String space) A simple implementation to pretty-print JSON file.
java.lang.String	readFile(java.lang.String filePath) Read file.
java.lang.String	readFile(java.lang.String filePath, java.lang.String charset) Read file.
org.json.JSONArray	readFileToJsonArray(java.lang.String filePath) Read file and convert to JSONArray.
org.json.JSONObject	readFileToJsonObject(java.lang.String filePath) Read file and convert to JSONObject.
void	replaceMember(java.lang.Object obj, java.lang.String name, java.lang.Object member) Replace specific member of the object.
void	setValue(java.lang.Object obj, java.lang.reflect.Field field, java.lang.String value) Assign value to object member.
java.lang.String	sformat(double value) Numbers are converted from scientific symbols back to numbers.
void	showAll(java.lang.Object object) List object all member and value.
<T> void	showSetterGetter(java.lang.Class<T> clazz) List object that setter, getter method and value.
java.lang.String	toExceptionStackTrace(java.lang.Throwable exception) Converts exception stack trace to string.
void	unzip(java.lang.String zipFilePath, java.lang.String unzipFolderPath) File uncompression uses ZIP.
void	zip(java.lang.String sourcePath, java.lang.String targetZipPath) File compression uses ZIP. example:

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

get

public static Utility get()

Returns instance of class Utility.

Returns:

instance

getThrowableDetail

public java.lang.String getThrowableDetail(java.lang.Throwable exception)

Return details of exception.

Parameters:

exception - exception

Returns:

stack trace

toExceptionStackTrace

public java.lang.String toExceptionStackTrace(java.lang.Throwable exception)

Converts exception stack trace to string.

Parameters:

exception - exception

Returns:

stack trace

sformat

public java.lang.String sformat(double value)

Numbers are converted from scientific symbols back to numbers.

Parameters:

value - source value

Returns:

Returns value of already formatted.

replaceMember

public void replaceMember(java.lang.Object obj,
                          java.lang.String name,
                          java.lang.Object member)

Replace specific member of the object.

Parameters:

obj - source object

name - member name

member - object member

showAll

public void showAll(java.lang.Object object)

List object all member and value.

Parameters:

object - target object

showSetterGetter

public <T> void showSetterGetter(java.lang.Class<T> clazz)

List object that setter, getter method and value.

 
 code:
 Utility.get().showSetterGetter(com.chungyo.external.kind24.WagersExtend.class)

 output:
 public String getWagersID(){return mWagersID;}
 public void setWagersID(String wagersid){mWagersID=wagersid;}
 public long getRoundSerial(){return mRoundSerial;}
 public void setRoundSerial(long roundserial){mRoundSerial=roundserial;}
 public String getRoundDate(){return mRoundDate;}
 public void setRoundDate(String rounddate){mRoundDate=rounddate;}
 public String getContent(){return mContent;}
 public void setContent(String content){mContent=content;}
 public int getSerialType(){return mSerialType;}
 public void setSerialType(int serialtype){mSerialType=serialtype;}

 
 

Type Parameters:

T - class type

Parameters:

clazz - target class

readFile

public java.lang.String readFile(java.lang.String filePath)

Read file.

Parameters:

filePath - target file path

Returns:

String

readFile

public java.lang.String readFile(java.lang.String filePath,
                                 java.lang.String charset)

Read file.

Parameters:

filePath - file path

charset - Format of the file content.

Returns:

Returns file content.

readFileToJsonObject

public org.json.JSONObject readFileToJsonObject(java.lang.String filePath)

Read file and convert to JSONObject.

Parameters:

filePath - file path

Returns:

JSON

readFileToJsonArray

public org.json.JSONArray readFileToJsonArray(java.lang.String filePath)

Read file and convert to JSONArray.

Parameters:

filePath - file path

Returns:

JSON

prettyPrintJson

public java.lang.String prettyPrintJson(org.json.JSONObject json)

A simple implementation to pretty-print JSON file.

Parameters:

json - JSONObject物件

Returns:

Returns JSON of pretty.

prettyPrintJson

public java.lang.String prettyPrintJson(org.json.JSONArray jsonarray)

A simple implementation to pretty-print JSON file.

Parameters:

jsonarray - JSONArray

Returns:

Returns JSON of pretty.

prettyPrintJson

public java.lang.String prettyPrintJson(java.lang.String unformattedJsonString)

A simple implementation to pretty-print JSON file.

Parameters:

unformattedJsonString - JSON of not yet pretty.

Returns:

Returns JSON of pretty.

prettyPrintJson

public java.lang.String prettyPrintJson(java.lang.String unformattedJsonString,
                                        java.lang.String space)

A simple implementation to pretty-print JSON file.

Parameters:

unformattedJsonString - JSON of not yet pretty.

space - JSON blank space

Returns:

Returns JSON of pretty.

unzip

public void unzip(java.lang.String zipFilePath,
                  java.lang.String unzipFolderPath)
           throws java.util.zip.ZipException,
                  java.io.IOException

File uncompression uses ZIP.

 example: {
   String zipPath = "C:/Users/RayLi/Desktop/toJavaModel.zip";
   String filePath = "C:/Users/RayLi/Desktop/";

   try {
     unzip(zipPath, filePath);
   } catch (Exception e) {
     e.printStackTrace();
   }
 

Parameters:

zipFilePath - zip source file path

unzipFolderPath - unzip target path

Throws:

java.io.IOException - when read file failure

java.util.zip.ZipException - when unzipping file failure

zip

public void zip(java.lang.String sourcePath,
                java.lang.String targetZipPath)
         throws java.io.IOException

File compression uses ZIP.
example:

 // Compression file:
 Utility.get().zip("D:/myFiles/file.log", "D:/test/file.zip");
 

 // Compression directory
 Utility.get().zip("D:/myFolder", "D:/folder.zip");
 

Parameters:

sourcePath - 原始檔案(路徑可為檔案或資料夾)

targetZipPath - 要壓縮的檔案及路徑

Throws:

java.io.IOException - 當開啟檔案進行壓緒時遭遇非預期失敗時將會拋出

deleteFiles

public void deleteFiles(java.lang.String path)

Delete files.

Parameters:

path - path

deleteFiles

public void deleteFiles(java.io.File file)

Delete deep files.

Parameters:

file - file

setValue

public void setValue(java.lang.Object obj,
                     java.lang.reflect.Field field,
                     java.lang.String value)
              throws java.lang.NumberFormatException,
                     java.lang.IllegalArgumentException,
                     java.lang.IllegalAccessException

Assign value to object member.

Parameters:

obj - source object

field - member field

value - field value

Throws:

java.lang.NumberFormatException - NumberFormatException

java.lang.IllegalArgumentException - IllegalArgumentException

java.lang.IllegalAccessException - IllegalAccessException

bytesToHex

public java.lang.String bytesToHex(byte[] bytes)

Convert bytes to strings.

Parameters:

bytes - bytes

Returns:

String