dos字符串截取示例_字符串乐趣示例代码

心已赠人 2022-12-07 12:09 164阅读 0赞

dos字符串截取示例

## Java代码： **(** Java Code: **)** ##

![Woman using laptop in cafe][]

Atsushi Yamada/Photodisc/Getty Images 山田淳/光碟/盖蒂图片社

This program provides some example [Java code][] of how to work with the String class. It shows the use of String Literals, manipulation of

该程序提供了一些有关如何使用String类的[Java代码][Java code]示例。 它显示了字符串文字的使用，操纵

, as well as converting them to numbers and back again.

，以及将其转换为数字并再次返回。

public class FunWithStrings {
         
     public static void main(String[] args) {
         
     //Use a string literal to assign a value to the String
     String address = "I live at 22b Baker Street!";
     //The same string but using Unicode values
     String unicodeAddress = "\u0049\u0020\u006C\u0069\u0076\u0065"
     + "\u0020\u0061\u0074\u0020\u0032\u0032\u0042\u0020"
     + "\u0042\u0061\u006B\u0065\u0072\u0020\u0053\u0074"
     + "\u0072\u0065\u0065\u0074\u0021";
     System.out.println("Here is Sherlock's address: " + address); 
     System.out.println("It even works using Unicode characters: " + unicodeAddress); 
     //A char array can be used to make a String
     char characterArray[] = {'C', 'h', 'a','r','a','c','t','e','r','s'};
     String characterString = new String(characterArray);
     //or even a byte arrray
     byte byteArray[] = {67,104,97,114,97,99,116,101,114,115};
     String byteString = new String(byteArray);
     System.out.println("Char Array: " + characterString);
     System.out.println("Byte Array: " + byteString);
     //Dealing with unusual characters by using the Unicode value
     String footballPlayer = "Thomas M\u00FCller plays for Germany.";
     System.out.println(footballPlayer);
     //Escape sequences for characters
     String speech = "\"I say old chap\", he said to me";
     String backSlashNewLine = "The cat was \\grining\\ from ear to ear. Or"
     + " here to\n\n\n here.";
     System.out.println(speech);
     System.out.println(backSlashNewLine);
     //Looking for Who in The Who
     String bandName = "The Who";
     int index = bandName.indexOf("Who");
     System.out.println("I found Who at position " + index);
     String newBandName = bandName.substring(0,index);
     //The Who is now The Clash
     newBandName = newBandName + "Clash";
     System.out.println("Let's change the band name to " + newBandName);
     //Convert a string number to an actual number
     String number = "10"; 
     int convertedNumber = Integer.valueOf(number).intValue();
     System.out.println("The number " + convertedNumber);
     //Converting to a differnt number type.
     int numberTwenty = 20;
     String converted = Double.toString(numberTwenty);
     System.out.println(converted);
     //Time to trim some spaces
     String tooManySpaces = " Neil Armstrong.. ";
     tooManySpaces = tooManySpaces.trim();
     //lexicographically Apple precedes Pear!
     String firstString = "Apple";
     String secondString = "Pear";
     if (firstString.compareTo(secondString)

## 更多阅读 **(** More Reading **)** ##

The articles that go with this program code are: [The String Class][], [The String Literal][], Comparing Strings and [Manipulating Strings][The String Class].

该程序代码附带的文章包括： [字符串类][The String Class] ， [字符串文字][The String Literal] ，比较字符串和[操纵字符串][The String Class] 。

> 翻译自: [https://www.thoughtco.com/fun-with-strings-example-code-2034322][https_www.thoughtco.com_fun-with-strings-example-code-2034322]

dos字符串截取示例

[Woman using laptop in cafe]: /images/20221123/cc943832969c4c9099e5d185ba13e350.png
[Java code]: https://www.thoughtco.com/calculator-example-program-with-java-4163459
[The String Class]: https://www.thoughtco.com/java-programming-4133478
[The String Literal]: https://www.thoughtco.com/the-string-literal-2034316
[https_www.thoughtco.com_fun-with-strings-example-code-2034322]: https://www.thoughtco.com/fun-with-strings-example-code-2034322