https://code-reference.com/ 2026-06-21T06:38:54+02:00 https://code-reference.com/ https://code-reference.com/ttps://code-reference.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-02-16T01:04:00+02:00 https://code-reference.com/java/io/printwriter?rev=1708041840&do=diff ---------- The PrintWriter class is a simple way of writing to files in Java io. It can be used in many ways and offers a great deal of methods inside the class. Some of these are quite common methods throughout the language itself. I will go through them step by step, giving examples for each. Let's get started: text/html 2013-04-26T10:02:18+02:00 https://code-reference.com/java/classes/extends?rev=1366963338&do=diff extends extends an already existing class with custom methods package myclass.mydate; import java.util.Date; /* * extends Date = extends class java.util.Date * java.util.Date must be importet */ public class MyDate extends Date { public int getFullYear() { return this.getYear() + 1900; } // overrride the method getMonth from java.util.Date @Override public int getMonth() { return 99; } } text/html 2017-07-31T22:37:05+02:00 https://code-reference.com/wiki/syntax?rev=1501533425&do=diff DokuWiki supports some simple markup language, which tries to make the datafiles to be as readable as possible. This page contains all possible syntax you may use when editing the pages. Simply have a look at the source of this page by pressing the Edit this page button at the top or bottom of the page. If you want to try something, just use the playground page. The simpler markup is easily accessible via quickbuttons, too. text/html 2024-02-16T01:04:12+02:00 https://code-reference.com/arduino/data_types/stringobject?rev=1708041852&do=diff Description The String class, part of the core as of version 0019, allows you to use and manipulate strings of text in more complex ways than character arrays do. You can concatenate Strings, append to them, search for and replace substrings, and more. It takes more memory than a simple character array, but it is also more useful. text/html 2024-02-16T01:04:27+02:00 https://code-reference.com/arduino/communication/stream?rev=1708041867&do=diff Stream is the base class for character and binary based streams. It is not called directly, but invoked whenever you use a function that relies on it. Stream defines the reading functions in Arduino. When using any core functionality that uses a read() or similar method, you can safely assume it calls on the Stream class. For functions like print(), Stream inherits from the Print class. text/html 2013-04-18T09:11:21+02:00 https://code-reference.com/java/loops/for?rev=1366269081&do=diff for ( init; condition; increment ){ statements; } description of for a for loop do statements while the condition is true/untrue, the increment counts the loop, it is possible to use more than 1 condition in the for loop example 1 of for in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { int myOtherCount=5; for (int i = 0; i <= myOtherCount; i++) { System.out.print… text/html 2024-02-16T01:04:02+02:00 https://code-reference.com/java/variables/global_variable?rev=1708041842&do=diff define a global variable in java, after the public class block example of global varialbe in java package codereferececomjava; public class CodeRefereceComJava { public static int globalDigit; // define a global variable public static void main(String[] args) { int digit = 5; // define and inital a local variable globalDigit = digit; // initalisize the global variable funct(); // call funct(); } public static void f… text/html 2024-02-16T01:06:20+02:00 https://code-reference.com/objective-c/foundation.framework/nsmutablearray.h?rev=1708041980&do=diff NSMutableArray The NSMutableArray class declares the programmatic interface to objects that manage a modifiable array of objects. This class adds insertion and deletion operations to the basic array-handling behavior inherited from NSArray. init addObject text/html 2014-06-08T01:44:03+02:00 https://code-reference.com/objective-c/foundation.framework/nsdictionary.h?rev=1402184643&do=diff NSDictionary The NSDictionary class declares the programmatic interface to objects that manage immutable associations of keys and values. A key-value pair within a dictionary is called an entry. Use this class when you need a convenient and efficient way to retrieve data associated with an arbitrary key. text/html 2018-01-12T07:29:06+02:00 https://code-reference.com/java/main?rev=1515738546&do=diff A class contains attributes(objects,variables,etc) and methods(pieces of code). The main method is the method which will run. Place any code you want to run inside the main method. public class test { public static void main(String[] args) { } } text/html 2013-04-15T09:30:44+02:00 https://code-reference.com/java/io/printstream/format?rev=1366011044&do=diff format args to the format string format and write the result to the stream format(String format, Object... args); return value: stream sign Description 0 if the place is not busy they prints a 0 # if the place is not busy they prints nothing . decimal separator Separates and decimal places. , Groups the numbers (a group is as large as the distance from ”,” to ”.”). ; Delimiter. To the left of the pattern is positive, the right for negative numbers. - The default character for the negative… text/html 2013-02-15T19:18:39+02:00 https://code-reference.com/arduino/arithmetic_operators/assignment?rev=1360952319&do=diff Stores the value to the right of the equal sign in the variable to the left of the equal sign. The single equal sign in the C programming language is called the assignment operator. It has a different meaning than in algebra class where it indicated an equation or equality. The assignment operator tells the microcontroller to evaluate whatever value or expression is on the right side of the equal sign, and store it in the variable to the left of the equal sign. text/html 2013-04-10T15:55:29+02:00 https://code-reference.com/java/control_structures/switch?rev=1365602129&do=diff The switch statement is a multi-select control structure. An expression is evaluated once and compared to 'constants'. In case of equality, the 'statements' that come after the 'constant' are processed. In switch 'statements' can only ordinary data types (ie, 'int', 'long', char, short, etc.) can be used. text/html 2024-02-16T01:12:03+02:00 https://code-reference.com/java/lang/math/random?rev=1708042323&do=diff Math.random() double; generate a 'double' random number example of Math.random in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { double randomDigit; randomDigit = Math.random(); System.out.println(randomDigit); // random number as double System.out.println(randomDigit*1000+1); //double random number between 1-1000 System.out.println((int)(randomDigit*1000+1)); //double random … text/html 2018-01-12T07:29:06+02:00 https://code-reference.com/java/datatypes?rev=1515738546&do=diff package datatypes; public class DataTypes { public static void main(String[] args) { // primitiv Datatypes boolean aa = true; // 1 bit char bb = 'A'; // 2 Bytes char cc = 65; // 2 Bytes byte dd = 12; // 1 Byte -128 - +127 short ee = 234; // 2 Bytes -32768 - +32767 int ff = 4711; // 4 Bytes long gg = 34567; // 8 Bytes float hh = 3.14f; // 4 Bytes d… text/html 2024-02-16T01:03:57+02:00 https://code-reference.com/java/control_structures/continue?rev=1708041837&do=diff continiue; continiue breaks a loop at a given point and continiue the loop example of continiue in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { int i; for (i=40;i<=45;i++) { if (i==42) continue; System.out.println("The answer is probably not "+i); } } } text/html 2013-06-13T18:48:11+02:00 https://code-reference.com/cpp/fstream?rev=1371142091&do=diff fstream fstream is used for opening/writing to files in c++. Here is an example #include <fstream> int main() { //create file ofstream file; // part of the fstream class // write to a file file.write("hello world!"); // close file file.close(); } text/html 2013-04-10T10:14:55+02:00 https://code-reference.com/java/util/scanner/nextshort?rev=1365581695&do=diff public short nextShort() return short scanned from the input example nextShort() in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); short currency; System.out.print("Please enter a number: "); currency = scan.nextShort(); // read keyboard buffer … text/html 2013-05-27T18:35:18+02:00 https://code-reference.com/java/util/scanner?rev=1369672518&do=diff Reads input from a Keyboard, or a Device CODE_SIGN_IDENTITY --verify --file-list --display -r- Terminal.app example Scanner in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); double currency, amount, exchangeRate; String currencyName, newCurrency; … text/html 2013-04-10T10:14:40+02:00 https://code-reference.com/java/util/scanner/nextlong?rev=1365581680&do=diff public long nextLong() return long scanned from the input example nextLong() in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); long currency; System.out.print("Please enter a number: "); currency = scan.nextLong(); // read keyboard buffer … text/html 2024-02-16T00:48:13+02:00 https://code-reference.com/java/lang?rev=1708040893&do=diff lang Name Description objectThe root of the class hierarchy. All classes have this as a superclass text/html 2013-04-10T10:13:54+02:00 https://code-reference.com/java/util/scanner/nextfloat?rev=1365581634&do=diff public float nextFloat() return float scanned from the input example nextFloat in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); float currency; System.out.print("Please enter a number: "); currency = scan.nextFloat(); // read currency … text/html 2013-04-10T10:14:10+02:00 https://code-reference.com/java/util/scanner/nextint?rev=1365581650&do=diff public int nextInt() return int scanned from the input example nextInt in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); int currency; System.out.print("Please enter a number: "); currency = scan.nextInt(); // read currency System.… text/html 2024-02-16T01:06:21+02:00 https://code-reference.com/objective-c/foundation.framework/nsstring.h?rev=1708041981&do=diff NSString The NSString class declares the programmatic interface for an object that manages immutable strings. NSString is implemented to represent an array of Unicode characters, in other words, a text string. caseinsensitivecompare isequaltostring lowercasestring stringbyappendingformat stringbyappendingstring stringwithformat uppercasestring text/html 2024-02-16T01:12:04+02:00 https://code-reference.com/java/lang/system/exit?rev=1708042324&do=diff public static void exit(int status) exit a programm with a return code example exit in java package test; public class Test{ public static void main(String[] args) { System.out.println("Example for exit in java"); System.exit(1); System.out.println("sorry but this is after our exit"); } } text/html 2024-02-16T01:03:57+02:00 https://code-reference.com/java/control_structures/break?rev=1708041837&do=diff break; continiue breaks a loop at a given point and exit the loop example of break in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { int i; for (i=42;i<=45;i++) { if (i==43) break; System.out.println("The answer is probably "+i); } } } text/html 2013-04-10T10:11:22+02:00 https://code-reference.com/java/lang/string/touppercase?rev=1365581482&do=diff toUpperCase() toUpperCase(locale) description of toUpperCase returns the String, converted to uppercase. example of toUpperCase in java package lang; public class Lang { public static void main(String[] args) { String str = "test 1234"; str = str.toUpperCase(); // str = str.toUpperCase(Locale.SIMPLIFIED_CHINESE); // for Simplified Chinese System.out.println(str+" in uppercase"); } } text/html 2013-04-10T10:11:06+02:00 https://code-reference.com/java/lang/string/tolowercase?rev=1365581466&do=diff toLowerCase() toLowerCase(locale); description of toLowerCase returns the String, converted to lowerspace. example of toLowerCase in java package lang; public class Lang { public static void main(String[] args) { String str = "TEST 1234"; str = str.toLowerCase(); // str = str.toLowerCase(Locale.SIMPLIFIED_CHINESE); // for Simplified Chinese System.out.println(str+" in lowercase"); } } text/html 2013-04-10T10:35:55+02:00 https://code-reference.com/java/control_structures/if?rev=1365582955&do=diff if ( condition == true ){ command; } check if a condition is true or false example of if in java package plausibilitycheck; import java.util.Scanner; public class Plausibilitycheck{ /** * @param args the command line arguments */ public static void main(String[] args) { int celsius; double fahrenheit; Scanner scan = new Scanner(System.in); System.out.print("Please type in Celsius : "); celsius = scan.nextInt(); … text/html 2013-04-17T08:11:25+02:00 https://code-reference.com/java/variables/array?rev=1366179085&do=diff an array, it is a object variable (box,container), which is a variable in a position to take up more than one object of the same type and manage it example of arrays in java package arrays; public class Arrays { public static void main(String[] args) { int[] digits1; // Reference Variable int[] digits2= new int[5]; // Definition with 5 x Integer int[] digits3= {1,2,3,4,5}; // Definie with initialization ( 5 Integer) // pass Element… text/html 2013-04-10T10:12:06+02:00 https://code-reference.com/java/lang/math/round?rev=1365581526&do=diff rounds a number example of round in java package roundanumber; import java.lang.Math; public class Roundanumber { public static void main(String[] args) { // TODO code application logic here double number, number2; number = 33.384422; number2 = 33.898823; System.out.println("number: " + Math.round(number)); System.out.println("number2: " + Math.round(number2)); } } text/html 2024-02-16T01:06:18+02:00 https://code-reference.com/objective-c/uikit.framework/uialerview.h?rev=1708041978&do=diff UIAlertView ---------- UIAlertView is a standard class in the UIKit framework. It is commonly used to display the state of something, or even just be used a way to communicate to the user in iOS applications. Code #import <UIKit/UIKit> - (void) viewDidLoad { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title Message" message:@"This is a simple message!" delegate:self canc… text/html 2024-02-16T01:12:05+02:00 https://code-reference.com/java/lang/string/replace?rev=1708042325&do=diff public String replace(CharSequence target, CharSequence replacement) description of replace this method is used to replace a char Sequence example of replace in java package replace; public class ReplaceString { public static void main(String[] args) { String str = "Hello"; str = str.replace("el", "xx"); System.out.println("String after replacement :"+ str ); } } text/html 2024-02-16T01:12:06+02:00 https://code-reference.com/lua/codea/stargenerator/star.lua?rev=1708042326&do=diff Star = class() function Star:init(init) -- you can accept and set parameters here self.mx = 500 self.my = 400 if init == true then self.x = math.random(self.mx-10,self.mx+10) self.y = math.random(self.my-10,self.my+10) self.size = math.random(1,3) else self.x = math.random(1,1200) self.y = math.random(1,1200) self.size = math.random(1,6) end self.xspeed = math.random(1,10) self.yspeed = math.random(1,10) se… text/html 2013-04-10T10:10:51+02:00 https://code-reference.com/java/lang/string/charat?rev=1365581451&do=diff charAt(int index) description of charAt returns char value at the specified index of string. example of charAt in java package lang; public class Lang { public static void main(String[] args) { String str = "test 1234"; char chr; chr = str.charAt(1); System.out.println(chr+" is the 2 char"); } } text/html 2013-04-11T10:03:40+02:00 https://code-reference.com/java/loops/while?rev=1365667420&do=diff while (condition) { //command } a while loop do something while a condition example of while loop in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { int i=4; while(i==4) { i++; } System.out.println("i is :" + i ); } } text/html 2013-04-10T10:13:38+02:00 https://code-reference.com/java/util/scanner/nextdouble?rev=1365581618&do=diff public double nextDouble() double scanned from the input example nextDouble in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); double currency, amount, exchangeRate; String currencyName, newCurrency; System.out.print("Please enter the amount (with d… text/html 2024-02-16T01:03:58+02:00 https://code-reference.com/java/control_structures/else?rev=1708041838&do=diff if ( condition == true ){ command; } else { // if the "if" condition false command; } check if a condition is true or false example of else package plausibilitycheck; import java.util.Scanner; public class Plausibilitycheck{ /** * @param args the command line arguments */ public static void main(String[] args) { int celsius; double fahrenheit; Scanner scan = new Scanner(System.in); System.out.print("Please … text/html 2024-02-16T01:06:18+02:00 https://code-reference.com/objective-c/uikit.framework/uilabel.h?rev=1708041978&do=diff UILabel The UILabel class implements a read-only text view. You can use it to display one or multiple lines of static text. init initwithframe text/html 2018-01-12T07:29:07+02:00 https://code-reference.com/java/loops/do?rev=1515738547&do=diff do { command; } while (condition); a do loop will run while a condition is false example of do loop in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { int i=4; do { i++; } while(i==4); System.out.println("i is :" + i ); } } text/html 2013-04-18T08:50:47+02:00 https://code-reference.com/java/lang/string/toarray?rev=1366267847&do=diff public char[] toCharArray() description of toCharArray() converts a string to a new character array example of toCharArray in java package codereferececomjava; public class CodeRefereceComJava { public static void main(String[] args) { String str = "some Text"; char[] text; System.out.println(str); // print the String text = str.toCharArray(); for (int i = 0; i <= text.length - 1; i++) { System.out.printl… text/html 2024-02-16T01:06:21+02:00 https://code-reference.com/objective-c/foundation.framework/nsfilemanager.h?rev=1708041981&do=diff NSFileManager NSFileManager class enables you to perform many generic file-system operations. init defaultManager text/html 2014-08-19T02:25:26+02:00 https://code-reference.com/objective-c/examples/uiwebview_using_local_resources?rev=1408407926&do=diff Sometimes you need or want to load a UIWebView displaying content provided with an app. If there is more then one site it might make sense to have an external .css or .js file for all your html content. Whatever, I was facing this problem currently and decided to provide my solution to you. text/html 2013-04-10T10:14:25+02:00 https://code-reference.com/java/util/scanner/nextline?rev=1365581665&do=diff public String nextLine() return the scanned content from the input example nextLine() in java package scanner; import java.util.Scanner; public class Scanner { public static void main(String[] args) { /* Create Scanner Object for the input from the keyboard */ Scanner scan = new Scanner(System.in); String line; System.out.print("Please enter what you want: "); line = scan.nextLine(); // read keyboard buffer …