Java Dizesi getBytes()
Java String sınıfı getBytes() yöntem, dizenin bayt dizisine kodlamasını yapar ve onu bir bayt dizisinde tutar.
İmza
getBytes() yönteminin üç çeşidi vardır. String getBytes() yönteminin imzası veya sözdizimi aşağıda verilmiştir:
public byte[] getBytes() public byte[] getBytes(Charset charset) public byte[] getBytes(String charsetName)throws UnsupportedEncodingException
Parametreler
karakter kümesi / karakter kümesiAdı - Yöntemin desteklediği karakter kümesinin adı.
İadeler
Bayt dizisi.
İstisna Atar
Desteklenmeyen Kodlama İstisnası: Bahsedilen karakter kümesinin yöntem tarafından desteklenmemesi durumunda atılır.
Dahili uygulama
public byte[] getBytes() { return StringCoding.encode(value, 0, value.length); } String sınıfı getBytes() Yöntem Örneği
Parametresiz getBytes() yöntemi, dizeyi platformun varsayılan karakter kümesi olan UTF - 8'i kullanarak kodlar. Aşağıdaki iki örnek de aynısını gösterir.
Dosya adı: StringGetBytesExample.java
public class StringGetBytesExample{ public static void main(String args[]){ String s1='ABCDEFG'; byte[] barr=s1.getBytes(); for(int i=0;i <barr.length;i++){ system.out.println(barr[i]); } }} < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> 65 66 67 68 69 70 71 </pre> <h2>Java String class getBytes() Method Example 2</h2> <p> <strong>FileName:</strong> StringGetBytesExample2.java</p> <p>The method returns a byte array that again can be passed to the String constructor to get String.</p> <pre> public class StringGetBytesExample2 { public static void main(String[] args) { String s1 = 'ABCDEFG'; byte[] barr = s1.getBytes(); for(int i=0;i <barr.length;i++){ system.out.println(barr[i]); } getting string back s2="new" string(barr); system.out.println(s2); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> 65 66 67 68 69 70 71 ABCDEFG </pre> <h2>Java String class getBytes() Method Example 3</h2> <p>The following example shows the encoding into a different charset.</p> <p> <strong>FileName:</strong> StringGetBytesExample3.java</p> <pre> // Import statement import java.io.*; public class StringGetBytesExample3 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // inside try block encoding is // being done using different charsets try { 16 - bit UCS Transformation format byte[] byteArr = str.getBytes('UTF-16'); System.out.println('After converted into UTF-16 the String is : '); for (int j = 0; j <bytearr.length; 16 j++) { system.out.print(bytearr[j]); } system.out.println('
'); big endian byte order, - bit ucs transformation format byte[] bytearr1="str.getBytes('UTF-16BE');" system.out.println('after converted into utf-16be the string is : '); for (int j="0;" < bytearr1.length; system.out.print(bytearr1[j]); iso latin alphabet bytearr2="str.getBytes('ISO-8859-1');" iso-8859-1 bytearr2.length; system.out.print(bytearr2[j]); little bytearr3="str.getBytes('UTF-16LE');" utf-16le bytearr3.length; system.out.print(bytearr3[j]); catch (unsupportedencodingexception g) system.out.println('unsupported character set' + g); pre> <p> <strong>Output:</strong> </p> <pre> The input String is : Welcome to JavaTpoint. After converted into UTF-16 the String is : -2-10870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into UTF-16BE the String is : 0870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into ISO-8859-1 the String is : 871011089911110910132116111327497118978411211110511011646 After converted into UTF-16LE the String is : 8701010108099011101090101032011601110320740970118097084011201110105011001160460 </pre> <h2>Java String class getBytes() Method Example 4</h2> <p>The following example shows when the charset is not supported by the getBytes() method, UnsupportedEncodingException is thrown.</p> <p> <strong>FileName:</strong> StringGetBytesExample4.java</p> <pre> public class StringGetBytesExample4 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // encoding into UTF - 17 byte[] byteArr = str.getBytes('UTF-17'); System.out.println('After converted into UTF-17 the String is : '); for (int j = 0; j <bytearr.length; j++) { system.out.print(bytearr[j]); } < pre> <p> <strong>Output:</strong> </p> <pre> /StringGetBytesExample4.java:11: error: unreported exception UnsupportedEncodingException; must be caught or declared to be thrown byte[] byteArr = str.getBytes('UTF-17'); ^ 1 error </pre> <hr></bytearr.length;></pre></bytearr.length;></pre></barr.length;i++){></pre></barr.length;i++){> Java String sınıfı getBytes() Yöntem Örnek 2
Dosya adı: StringGetBytesExample2.java
Yöntem, String'i almak için yine String yapıcısına aktarılabilecek bir bayt dizisi döndürür.
public class StringGetBytesExample2 { public static void main(String[] args) { String s1 = 'ABCDEFG'; byte[] barr = s1.getBytes(); for(int i=0;i <barr.length;i++){ system.out.println(barr[i]); } getting string back s2="new" string(barr); system.out.println(s2); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> 65 66 67 68 69 70 71 ABCDEFG </pre> <h2>Java String class getBytes() Method Example 3</h2> <p>The following example shows the encoding into a different charset.</p> <p> <strong>FileName:</strong> StringGetBytesExample3.java</p> <pre> // Import statement import java.io.*; public class StringGetBytesExample3 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // inside try block encoding is // being done using different charsets try { 16 - bit UCS Transformation format byte[] byteArr = str.getBytes('UTF-16'); System.out.println('After converted into UTF-16 the String is : '); for (int j = 0; j <bytearr.length; 16 j++) { system.out.print(bytearr[j]); } system.out.println(\'
\'); big endian byte order, - bit ucs transformation format byte[] bytearr1="str.getBytes('UTF-16BE');" system.out.println(\'after converted into utf-16be the string is : \'); for (int j="0;" < bytearr1.length; system.out.print(bytearr1[j]); iso latin alphabet bytearr2="str.getBytes('ISO-8859-1');" iso-8859-1 bytearr2.length; system.out.print(bytearr2[j]); little bytearr3="str.getBytes('UTF-16LE');" utf-16le bytearr3.length; system.out.print(bytearr3[j]); catch (unsupportedencodingexception g) system.out.println(\'unsupported character set\' + g); pre> <p> <strong>Output:</strong> </p> <pre> The input String is : Welcome to JavaTpoint. After converted into UTF-16 the String is : -2-10870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into UTF-16BE the String is : 0870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into ISO-8859-1 the String is : 871011089911110910132116111327497118978411211110511011646 After converted into UTF-16LE the String is : 8701010108099011101090101032011601110320740970118097084011201110105011001160460 </pre> <h2>Java String class getBytes() Method Example 4</h2> <p>The following example shows when the charset is not supported by the getBytes() method, UnsupportedEncodingException is thrown.</p> <p> <strong>FileName:</strong> StringGetBytesExample4.java</p> <pre> public class StringGetBytesExample4 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // encoding into UTF - 17 byte[] byteArr = str.getBytes('UTF-17'); System.out.println('After converted into UTF-17 the String is : '); for (int j = 0; j <bytearr.length; j++) { system.out.print(bytearr[j]); } < pre> <p> <strong>Output:</strong> </p> <pre> /StringGetBytesExample4.java:11: error: unreported exception UnsupportedEncodingException; must be caught or declared to be thrown byte[] byteArr = str.getBytes('UTF-17'); ^ 1 error </pre> <hr></bytearr.length;></pre></bytearr.length;></pre></barr.length;i++){> Java String sınıfı getBytes() Yöntem Örnek 3
Aşağıdaki örnek, kodlamanın farklı bir karakter kümesine dönüştürülmesini gösterir.
Dosya adı: StringGetBytesExample3.java
// Import statement import java.io.*; public class StringGetBytesExample3 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // inside try block encoding is // being done using different charsets try { 16 - bit UCS Transformation format byte[] byteArr = str.getBytes('UTF-16'); System.out.println('After converted into UTF-16 the String is : '); for (int j = 0; j <bytearr.length; 16 j++) { system.out.print(bytearr[j]); } system.out.println(\'
\'); big endian byte order, - bit ucs transformation format byte[] bytearr1="str.getBytes('UTF-16BE');" system.out.println(\'after converted into utf-16be the string is : \'); for (int j="0;" < bytearr1.length; system.out.print(bytearr1[j]); iso latin alphabet bytearr2="str.getBytes('ISO-8859-1');" iso-8859-1 bytearr2.length; system.out.print(bytearr2[j]); little bytearr3="str.getBytes('UTF-16LE');" utf-16le bytearr3.length; system.out.print(bytearr3[j]); catch (unsupportedencodingexception g) system.out.println(\'unsupported character set\' + g); pre> <p> <strong>Output:</strong> </p> <pre> The input String is : Welcome to JavaTpoint. After converted into UTF-16 the String is : -2-10870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into UTF-16BE the String is : 0870101010809901110109010103201160111032074097011809708401120111010501100116046 After converted into ISO-8859-1 the String is : 871011089911110910132116111327497118978411211110511011646 After converted into UTF-16LE the String is : 8701010108099011101090101032011601110320740970118097084011201110105011001160460 </pre> <h2>Java String class getBytes() Method Example 4</h2> <p>The following example shows when the charset is not supported by the getBytes() method, UnsupportedEncodingException is thrown.</p> <p> <strong>FileName:</strong> StringGetBytesExample4.java</p> <pre> public class StringGetBytesExample4 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // encoding into UTF - 17 byte[] byteArr = str.getBytes('UTF-17'); System.out.println('After converted into UTF-17 the String is : '); for (int j = 0; j <bytearr.length; j++) { system.out.print(bytearr[j]); } < pre> <p> <strong>Output:</strong> </p> <pre> /StringGetBytesExample4.java:11: error: unreported exception UnsupportedEncodingException; must be caught or declared to be thrown byte[] byteArr = str.getBytes('UTF-17'); ^ 1 error </pre> <hr></bytearr.length;></pre></bytearr.length;> Java String sınıfı getBytes() Yöntem Örnek 4
Aşağıdaki örnek, karakter kümesinin getBytes() yöntemi tarafından desteklenmediğini gösterir; UnsupportedEncodingException oluşturulur.
Dosya adı: StringGetBytesExample4.java
public class StringGetBytesExample4 { // main method public static void main(String argvs[]) { // input string String str = 'Welcome to JavaTpoint.'; System.out.println('The input String is : '); System.out.println(str + '
'); // encoding into UTF - 17 byte[] byteArr = str.getBytes('UTF-17'); System.out.println('After converted into UTF-17 the String is : '); for (int j = 0; j <bytearr.length; j++) { system.out.print(bytearr[j]); } < pre> <p> <strong>Output:</strong> </p> <pre> /StringGetBytesExample4.java:11: error: unreported exception UnsupportedEncodingException; must be caught or declared to be thrown byte[] byteArr = str.getBytes('UTF-17'); ^ 1 error </pre> <hr></bytearr.length;> 
