cobol to java conversion

PackageCom.hgd.study;/*** Conversion between basic data types *@authorHutiger **/ Public classdatatypeconversion { Public Static voidMain (string[] args) {}/*** Conversion of small type to large type: * Complete automatic conversion, do not allow the programmer to do the corresponding operation *@paramargs*/ Public Static voidStob () {byteb=100; System.out.pri

interfaces and Java Abstract classes exist for implementation and Inheritance of specific classes. If you want to write a specific class to inherit another specific class, then there is a big problem with your design. The Java Abstract class exists for inheritance, and its abstract method is to force the subclass to be implemented. Use Java interfaces and abst

10 most popular Java classes (conversion) and 10 popular java classes Original article: http://www.csdn.net/article/2012-06-04/2806277 Every Java programmer has his/her own Java class table. This table does not have strict rules or rules to follow. It depends entirely on the

Java date conversion, java date Core classes involved:DateClass, SimpleDateFormatClass, CalendarClassI. Date and long Convert Date type to long type Date date = new Date (); // obtain the current time Date type Long date2long = date. getTime (); // convert Date to long Convert long type to Date type Long cur = System. currentTimeMills (); // gets the resul

The previous three blogs focus on the character, coding problems, through the three blog members Bo friends on a variety of character encoding has a preliminary understanding, to understand the Java Chinese problem this must be understood. But understanding these is just a start, the following blog will focus on how Java garbled is produced, what is garbled, how to fundamentally solve the garbled problem. L

Automatic type conversion in JavaIn Java programs, it is often necessary to convert data between different basic data types. For example:650) this.width=650; "src=" http://img.mukewang.com/5359d0c70001ffe202530066.jpg "/> in code int type variable Score1 can be directly for the double variable Score2 completion of the assignment operation, The result is: 650) this.width=650; src= http://img.mukewang.com/ 53

Story 2 of Java and XML: mutual conversion between XML and Java objects Conversion Between XML files and Java objects is very simple. With annotation's java file and XML schema XSD file, you can use the jaxb api to convert XML and

The first two sections are about socket server, client building and packet encapsulation. Let's talk about the conversion between Java objects and XML format files today.In the previous section we listed a message format, which we can actually understand as a string. But we can't write strings every time, so it's going to be crazy. Since it is object-oriented programming, there is certainly a good way to so

The first two sections are about socket server, client building and packet encapsulation. Let's talk about the conversion between Java objects and XML format files today.In the previous section we listed a message format, which we can actually understand as a string. But we can't write strings every time, so it's going to be crazy. Since it is object-oriented programming, there is certainly a good way to so

Java basics-conversion between basic types and packaging classes, between basic types and strings, and between java stringsConversion between the basic type and the packaging class The conversion between the basic type and the packaging class is often required. Take Integer as an example (the operations of other packag

Issue topic: Type conversionPage number:37 pagesTitle: Discussion point: the answer is not d, it should be B. Reason: look at the result of the compiler input belowKnowledge Expansion: boxing and unpacking, = = differs from equalsbefore also always heard what boxing, unpacking and other (loaded your sister's box, Java concept is more), not too much attention, and later looked at the information, the so-called boxing and unboxing mainly because in

1. Convert the list of Java objects to an array of JSON objects and move to a stringJsonarray array = jsonarray.fromobject (list);String jsonstr = array.tostring ();2. Converting Java objects to JSON objects and converting them into stringsJsonobject object = jsonobject.fromobject (user);Log4jInit.ysulogger.debug (Object.ToString ());3. Convert the JSON string to an array of

JAVA program, basic data type, data type conversion, variables and constants, common operators, java Operators I. Basic Data Types Integer type: byte, short, int (commonly used), long (usually used) Defines a variable int a = 10; Floating point type (decimal): float, double (commonly used) Character Type: char (not a string) Char B = 'A' Escape Character class:

Java array and vector conversion, Java array vectorConversion between Java array and vector /* Object [] object1 = null; // The array defines Vector

Discuss the conversion between JAVA data types-Linux general technology-Linux programming and kernel information. The following is a detailed description. Source: javaresearch Some beginners may encounter difficulties in converting data types in JAVA, such as conversions between integers, float, and double, and between integers and strings, and Handling and disp

Forced type conversions in JavaI believe that the small partners have found that, although automatic type conversion is very convenient, but does not meet all the programming needs.For example, how do you do this when you need to assign the value of a double variable to a variable of type int?Obviously, this conversion is not automatic! Because the int type has a smaller storage range than a double type. Th

Conversion between java files and byte, and byte for java files /*** Get the byte array of the specified File */private byte [] getBytes (String filePath) {byte [] buffer = null; try {file File = new File (filePath ); fileInputStream FCM = new FileInputStream (file); ByteArrayOutputStream bos = new ByteArrayOutputStream (1000); byte [] B = new byte [1000]; int n

] = (byte) ((res >> 8) 0xff);//Sub-low TARGETS[2] = (byte) ((res >>) 0xff);//Secondary high TARGETS[3] = (byte) (res >>> 24);//highest bit, unsigned right shift. return targets; } /** * Converts a byte array of length 2 to 16-bit int * * @param Res * byte[] * @return int * */ public static int Byte2int (byte[] res) { res = Inversionbyte (res); A byte data shifted left 24 bits into 0x?? 000000, then move right 8 bits into 0x00?? 0000 int targets = (Res[0] 0xff)

",(short)han); The output is: 6c49 In turn, it is possible to specify a character with UTF-16 encoding, like this: char han=0x6c49; System.out.println(han); The output is: Chinese This is also said, as long as you correctly read the word "Han", then its representation in memory must be 0x6c49, no other value can represent the word (of course, if you read the wrong, the result is not know, Fanwei said: Read, read wrong Ah, that is equal to hundreds of millions of? The mountain eldest broth

). toString ()); System.out.println ("Octal turns into binary: \ t" +integer.tobinarystring (integer.valueof ("23", 8)); System.out.println ("octal turns into 16 binary: \ t" +integer.tohexstring (integer.valueof ("23", 8)); SYSTEM.OUT.PRINTLN ("Binary goto decimal: \ t" +integer.valueof ("0101", 2). toString ()); System.out.println ("binary octal: \ t" +integer.tooctalstring (Integer.parseint ("0101", 2)); SYSTEM.OUT.PRINTLN ("Binary turn 16 binary: \ t" +integer.tohexstring (In