Java StringWriter sınıfı String Buffer akışının karakterlerinden bir dize oluşturur. Java'daki StringWriter sınıfının yöntemleri, Akış kapatıldıktan sonra da çağrılabilir, çünkü bu, hiçbir GÇ İstisnasına neden olmaz. 

Java StringWriter Sınıfında Bildirim

public class StringWriter extends Writer

Java'da StringWriter Sınıfındaki Yapıcılar

Java'da String Writer Sınıfında kullanılan yapıcılar aşağıda belirtilmiştir:

Java'da yakalamayı deneyin

StringWriter():String Buffer'ın başlangıç ​​veya varsayılan boyutunu kullanarak yeni bir StringWriter oluştururStringWriter(int boyut):Belirtilen String Buffer boyutunu kullanarak yeni bir StringWriter oluşturur

Java StringWriter Sınıfındaki Yöntemler 

Java StringWriter sınıfıyla ilgili tüm yöntemler aşağıda belirtilmiştir:

1. yaz(int karakter)

java.io.StringWriter.write(int karakter) String Buffer'a tek bir karakter yazar. 

  Syntax:   public void write(int char)   Parameters :    char : int value of the character to be written.   Return :   void

2. write(Dize dizisi)

java.io.StringWriter.write(String dizisi) String Buffer'a string yazar. 

  Syntax:   public void write(String str)   Parameters :    str : string to be written to the String Buffer.   Return :   void

3. write(String str int ofset int maxlen)

java.io.StringWriter.write(String str int ofset int maxlen) dizenin bir kısmını String Buffer'a yazar. 

  Syntax:   public void write(String str int offset int maxlen)   Parameters :    str : string to be written to the String Buffer. offset : start position of the String maxlen : maximum length upto which string has to written   Return :   void

4. write(char[] carray int ofset int maxlen)

java.io.StringWriter.write(char[] carray int ofset int maxlen) karakter dizisinin bir kısmını String Buffer'a yazar. 

  Syntax:   public void write(char[] carray int offset int maxlen)   Parameters :    carray : character to be written to the String Buffer offset : start position of the character array maxlen : maximum no. of the character of the carray has to written   Return :   void

5. toString()

java.io.StringWriter.toString() Dize Arabelleğinin değerini dize olarak döndürür.

  Syntax:   public String toString()   Parameters :    -----------   Return :   string value of the String Buffer

6. kapat()

java.io.StringWriter.close() String Buffer'ı kapatır. Yöntem, String Buffer'ı kapattıktan sonra da çağrılabileceğinden hiçbir rol oynamaz. 

  Syntax:   public void close()   Parameters :    -----------   Return :   void

7.append(char Sw)

java.io.StringWriter.append(char Sw) Dize Arabelleğine tek bir karakter ekler. 

  Syntax:   public StringWriter append(char Sw)   Parameters :    Sw : character to be append   Return :   StringWriter

8.append(CharSequence char_sq)

java.io.StringWriter.append(CharSequence char_sq) belirtilen karakter dizisini String Buffer'a ekler. 

  Syntax:   public StringWriter append(CharSequence char_sq)   Parameters :    char_sq : Character sequence to append.   Return :   StringWriter if char sequence is null then NULL appends to the StringWriter.

9.append(CharSequence char_sq int start int end)

java.io.StringWriter.append(CharSequence char_sq int start int end) Bir karakter dizisinin belirtilen kısmını String Buffer'a ekler. 

  Syntax:   public StringWriter append(CharSequence char_sq int start int end)   Parameters :    char_sq : Character sequence to append. start : start of character in the Char Sequence end : end of character in the Char Sequence   Return :   void

10. yıkama()

java.io.StringWriter.flush() StringWriter akışını temizler.

  Syntax:   public void flush()   Parameters :    -----   Return :   void

11. getBuffer()

java.io.StringWriter.getBuffer() StringWriter'ın Dize Arabelleğini döndürür. 

  Syntax:   public StringBuffer getBuffer()   Parameters :    -----------   Return :   String Buffer with its current value.

Örnek

StringWriter sınıfı yöntemlerinin kullanımını gösteren Java programı: 

tam formda

// Java program illustrating the working of StringWriter // class methods write(int char) write(String str) close() // write(String str int offset int maxlen) toString() // write(char[] carray int offset int maxlen) import java.io.*; public class NewClass {  public static void main(String[] args)  throws IOException  {  // Initializing String Writer  StringWriter geek_writer1 = new StringWriter();  StringWriter geek_writer2 = new StringWriter();  StringWriter geek_writer3 = new StringWriter();  StringWriter geek_writer4 = new StringWriter();  // Use of write(int char) : to write a character  geek_writer1.write(71);  geek_writer1.write(70);  geek_writer1.write(71);  // Use of toString() : Value written by write(int  // char)  System.out.println('Using write(int char) : '  + geek_writer1.toString());  String str = 'Hello Geeks';  // Use of write(String str) : to write string  geek_writer2.write(str);  // Value written by write(String str)  System.out.println('Using write(String str) : '  + geek_writer2.toString());  // Use of write(String str int offset int maxlen)  // : to write part of string  geek_writer3.write(str 2 4);  geek_writer3.write(str 5 6);  // Value written by write(String str int offset  // int maxlen)  System.out.println(  'Using write(str offset maxlen) : '  + geek_writer3.toString());  try {  // Use of Close() method : to close the  // geek_writer4 But no use as String Writer  // method is still working with it  geek_writer4.close();  }  catch (IOException except) {  System.out.println('ERROR');  except.printStackTrace();  ;  }  // Initializing character array  char[] carray = str.toCharArray();  // Use of write(char[] carray int offset int  // maxlen): to write part of char array  geek_writer4.write(carray 4 6);  // Value written by write(String str int offset  // int maxlen)  System.out.println(  'Using write(carray offset maxlen) : '  + geek_writer4.toString());  } } 

Çıkış

Using write(int char) : GFG Using write(String str) : Hello Geeks Using write(str offset maxlen) : llo Geeks Using write(carray offset maxlen) : o Geek

StringWriter sınıfı yöntemlerinin kullanımını gösteren Java programı: apend(CharSequence char_sq) apend(char Sw) apend(CharSequence char_sq int startint end) flush() getgetBuffer()

// Java program illustrating the working of StringWriter // class methods append(CharSequence char_sq) append(char // Sw) append(CharSequence char_sq int startint end) // flush() getgetBuffer() import java.io.*; public class NewClass {  public static void main(String[] args)  throws IOException  {  // Initializing String Writer  StringWriter geek_writer1 = new StringWriter();  StringWriter geek_writer2 = new StringWriter();  StringWriter geek_writer3 = new StringWriter();  // Use of write(int char) : to write a character  geek_writer1.write(71);  geek_writer1.write(70);  geek_writer1.write(71);  // Use of toString() : Value written by write(int  // char)  System.out.println('Using write(int char) : '  + geek_writer1.toString());  // Using flush() method  geek_writer1.flush();  System.out.println('Using flush() : '  + geek_writer1.toString());  // Use of append(char Sw)  System.out.println('append(char Sw) : '  + geek_writer1.append(' 1GFG1'));  // Use of getBuffer() :  System.out.println('Using geek_writer1 : '  + geek_writer1.getBuffer());  // Initializing Character Sequence  CharSequence char_sq1 = '1 Hello 1';  CharSequence char_sq2 = ' : 2 Geeks 2';  // Use of append(CharSequence char_sq)  geek_writer2.append(char_sq1);  geek_writer2.append(char_sq2);  System.out.println('append(char_sq) : '  + geek_writer2.toString());  // Use of append(CharSequence char_sqint startint  // end)  geek_writer3.append(char_sq1 0 3);  geek_writer3.append(char_sq2 3 6);  System.out.println('append(char_sqstartend) : '  + geek_writer3.toString());  } } 

Çıkış

Using write(int char) : GFG Using flush() : GFG append(char Sw) : GFG 1GFG1 Using geek_writer1 : GFG 1GFG1 append(char_sq) : 1 Hello 1 : 2 Geeks 2 append(char_sqstartend) : 1 H2 G