How do you convert a string to a byte array and visa versa?
Sun MicrosystemsJava.lang.String has certain utilities to convert a string into a byte array and visa versa. A string can be converted correctly and fully into a byte array by using a character encoding such as UTF-8, US-ASCII. All the overloaded String.getBytes() methods will convert a string into a byte array. Some of these methods take an encoding identifier as an argument, while others take no arguments and will use the platform's default encoding to convert the string.
Related QuestionsHow to convert an int to a char array or C++ string?
Tech Talk about C++ and C Issues / Comeau C++ and C FAQHow to add a float (or "any" type really) to the end of a C++ string? Unlike routines like atoi mentioned in the previous question, there is no direct routine such as itoa available. However, similar to the string I/O routines in the previous question, one can do this: #include <stdio.h> // cstdio in C++ // ..
Related QuestionsHow can I convert an INT into CHAR*/STRING or vice versa?
Beginner FAQ - GPWikiThis is something you do a lot in programming and pretty much every language makes it easy to convert between types. You may have already printed integers to the console with COUT or PRINTF, which of course needs to be converted to a string first. Converting numbers to strings is done in a similar way. Boost is a C++ library that can help you with problems like these and many others.
Related QuestionsCan I convert my boiler from Oil to Gas or visa-versa?
Dunkirk | FAQsThe simple answer is no, except for ECR International's "Ultimate" brand boilers. The "Ultimate" boiler may be converted by replacing the existing burner with a factory supplied substitute burner. Please bear in mind that most boilers are designed to accommodate the characteristics of the intended fuel. A boiler that is designed to burn natural gas (a vapor) utilizes burners that simply cannot burn No. 2 fuel oil (an atomized liquid).
Related QuestionsDesco EnergyThe simple answer is no. While some boilers can be converted by replacing the existing burner with a substitute burner this is a project strictly limited to professionals and not to be undertaken as a do it yourself project under any circumstances. Please bear in mind that most boilers are designed to accommodate the characteristics of the intended fuel. A boiler that is designed to burn natural gas (a vapor) utilizes burners that simply cannot burn No. 2 fuel oil (an atomized liquid).Related Questions
How do I convert a string to a number?
Updating the For Beginners forum FAQ - GameDev.Net Discussio...I am including the header file <string>, and I am using the string class, but the code doesn't compile? (namespace resolution, having the std:: topics) How do I use unique() with vectors? (answered only once, but still a good question to have due to people not knowing that it's possible to do)
Related QuestionsIs Bioheat® fuel the same as Biodiesel, or visa versa?
Biodiesel.org - Home Heating OilNO. Biodiesel is the term for the pure biodiesel, B100. Bioheat® fuel is conventional heating oil containing biodiesel. NO. Biodiesel is produced from raw vegetable oils or animal fats, but the oil or fat must go through the chemical reaction (called transesterification) to make it into biodiesel and be tested to make sure it meets D 6751 before it is blended with heating oil.
Related QuestionsHow do I convert a common date to a Jewish date or vice versa?
Frequently Asked QuestionsSimply use the dropdown lists to specify the common or Jewish date that you want. That's it -- no "compute" button to press. The answer will appear instantaneously in the other fields.
Related QuestionsHow do I convert from US to UK measures, and vice-versa?
The Brew Shop - Frequently Asked QuestionsThat is to say, for all units above the ounce, the Imperial or British variant is almost exactly 20% larger than the corresponding US unit.
Related QuestionsHow to convert the datetime into a string for use in the SQL ' statement?
Megasolutions.net :: Asp.Net Frequently Asked Questions - FA...Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Private Sub ddlCulture_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ddlCulture.SelectedIndexChanged
Related QuestionsHow do I convert an integer to a string representation?
CSC 209 Summer 2006Well, printf does it for output, so look at its related function named sprintf that "prints formated output to a string."
Related QuestionsHow can I convert an integer or a float to a string?
Frequently Asked QuestionsIt's easy. Use sprintf. For example: char string1[50]; char string2[50]; short int var1; float var2; ... sprintf (string1, "%d", var1); sprintf (string2, "%f", var2);
Related QuestionsHow can I convert from string to int ?
C++ cornerYou want to make a function that converts from a type to another. Like from std::string to int, or the other way around. This can be done using std::stringstream and insertion / extraction operators. Just as above, templates will prove of great help: Its usage is not as straightforward as the above explained max template. Normally, you would want to call it like "int value = lexical_cast( myStdString );". There is, however, a problem.
Related QuestionsHow do I convert a std::string to a number?
Miscellaneous technical issues, C++ FAQ LiteThere are two easy ways to do this: you can use the <cstdio> facilities or the <iostream> library. In general, you should prefer the <iostream> library.
Related QuestionsHow do I convert a string into an internet address?
Programming UNIX Sockets in C - Frequently Asked Questions: ...If you are reading a host's address from the command line, you may not know if you have an aaa.bbb.ccc.ddd style address, or a host.domain.com style address. What I do with these, is first try to use it as a aaa.bbb.ccc.ddd type address, and if that fails, then do a name lookup on it. Here is an example: Converts ascii text to in_addr struct. NULL is returned if the address can not be found.
Related QuestionsHow do I convert from int to string?
FAQ - CPPConverting from int to string is a little more complicated than converting a string to int. There are no standard C++ functions for this, but there is a way to do it using standard stringstreams. The class stringstream is declared in header sstream and is used like this: std::stringstream ss; std::string str; ss << 31337; ss >> str;
Related QuestionsWill I experience any problems storing an array of bytes (byte[]) in my tuple?
FAQ - TSpaces - Computer Science Research at AlmadenNo, you'll not. Java treats an array as a serialiazable object so it is a valid Field value. Here is a fragment of code that I wrote to verify that TSpaces can store very long arrays of byte. for ( int s = 1; s<999; s++) { System.out.println( s ); byte h[] = new byte[ s*1000 ]; for( int i=0;i< s*1000; i++) { h[i] = 65; } String key = "hello"+s; Tuple t = new Tuple(key, h ); ts.write( t ); Tuple template = new Tuple(key,new Field(byte[].class)); Tuple t2 = ts.read(template); System.out.
Related QuestionsWill my station be able to switch from a BMI blanket to a BMI per program license or visa versa?
Radio Music License CommitteeStations will be permitted to switch between blanket and per program licenses as of January 1 and July 1 of each year beginning as of January 1, 2004. A station's ability to change from a blanket to a per program license is contingent upon the station using BMI feature music in no more than the requisite number of weighted programming periods, as explained in the fee allocation methodology.
Related QuestionsHow to convert byte[0]=2 byte[1]=1 to its corresponding short value?
JavaChina: SCJP Questions & Answers by Roseanne Zhang (8...You are not allowed using byte as your array name, since it is a reserved word. Let's change it to b[]
Related QuestionsCan I convert my liquid propane barbecue to natural gas (or vice-versa)?
Frequently Asked QuestionsYes and No. Only North American made barbecues. The more specific answer is that you can definitely convert almost any barbecue over to another gas, but the cost will be dependent upon the type and brand of barbecue you have. Some manufacturers offer conversion kits that make things relatively simple. The least you will get away with is replacing the gas hose and the valves in addition to any fittings you need to connect everything together. Side-burners can further complicate matters.
Related QuestionsHow do I convert a string to an int etc?
FAQ for the microsoft.public.languages.csharp newsgroupIn general, when you want to convert from one type to another, the first class to look at is System.Convert. It has a load of static methods which are likely to help you. If you're converting from a String, you could also check whether the type that you want to convert to has a Parse method or something similar - for instance, I usually use DateTime.ParseExact to convert from a String to a DateTime.
Related QuestionsHow to convert a string to a number using JavaScript?
AKAAS :: JavaScript Interview Questions and Answers | JavaSc...You can use the parseInt() and parseFloat() methods. Notice that extra letters following a valid number are ignored, which is kinda wierd but convenient at times.
Related QuestionsQ. How do I convert from string to int?
C++ FAQs - GeneralThe simplest way is to use the function int std::atoi(const char*) declared in cstdlib. For example, std::atoi("31337") returns 31337. Alternatively, you can use std::strtol() or std::strtoul(). These functions provide more functionality such as the ability to convert hexadecimal or octal number strings, and are also declared in cstdlib.
Related QuestionsQ. How do I convert from int to string?
C++ FAQs - GeneralConverting from int to string is a little more complicated than converting a string to int. There are no standard C++ functions for this, but there is a way to do it using standard stringstreams. The class stringstream is declared in header sstream and is used like this:
Related QuestionsHow do I convert a string to all upper or lower case?
Library FunctionsSome libraries have routines strupr and strlwr or strupper and strlower, but these are not Standard or portable. It's a straightforward exercise to write upper/lower-case functions in terms of the toupper and tolower macros in <ctype.h>; see also question 13.5. (The only tricky part is that the function will either have to modify the string in-place or deal with the problem of returning a new string; see question 7.5a.
Related QuestionsSect. 18) How do I convert a String to an int?
Java Programmer's FAQ - Part DThere are several ways. The most straightforward is: String myString = numString.trim(); int i = Integer.parseInt(myString); long l = Long.parseLong(myString) or String myString = numString.trim(); i = Integer.parseInt(myString,myIntRadix); Note 1: There is a gotcha with parseInt - it will throw a NumberFormatException for String values in the range "80000000" to "ffffffff". You might expect it to interpret them as negative, but it does not. The values have to be "-80000000" .
Related QuestionsSect. 18) How do I convert an int to a string?
Java Programmer's FAQ - Part DTry any of these: String s = String.valueOf(i); or String s = Integer.toString(i); or String s = Integer.toString(i, radix); or // briefer but may result in extra object allocation. String s = "" + i; Note: There are similar classes for Double, Float, Long, etc.
Related Questions