String Class Constructors In Java

String class provides various constructor .To create empty constructor we call default constructor as String s = new String(); Here we will discuss each and every constructor one by one. In below program we have discussed each constructor in detail.

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import java.io.UnsupportedEncodingException; import java.nio.charset.Charset; public class StringConstructors { public static void main(String[] args) throws UnsupportedEncodingException { //Default Constructor String s1 = new String(); //Constructor with char array char[] charArr = {'j','a','v','a'}; String s2 = new String(charArr); System.out.println("S2 : "+s2); //Constructor with byte array String original = new String("A" + "\u00ea" + "\u00f1" + "\u00fc" + "C"); String s3 = new String(original.getBytes()); System.out.println("S3 : "+s3); //Constructor with String String s4 = new String("Java Identifiers"); System.out.println("S4 : "+s4); //Constructor with StringBuffer String s5 = new String(new StringBuffer("Java")); System.out.println("S5 : "+s5); //Constructor with StringBuilder String s6 = new String(new StringBuilder("Java")); System.out.println("S6 : "+s6); //Constructor with Bytes and character encoding byte[] utf8Bytes = original.getBytes("UTF8"); String s7 = new String(utf8Bytes, "UTF8"); System.out.println("S7 : "+s7); //Constructor with Bytes and Charset class String s8 = new String(utf8Bytes,Charset.defaultCharset()); System.out.println("S8 : "+s8); //Constructor with char array, offset and count String s9 = new String(charArr,0,2); System.out.println("S9 : "+s9); //Constructor with ASCII array byte ascii[] = {65, 66, 67, 68, 69, 70 }; String s10 = new String(ascii); System.out.println("S10 : "+s10); } }

Output:

S2 : java

S3 : AêñüC

S4 : Java Identifiers

S5 : Java

S6 : Java

S7 : AêñüC

S8 : AêñüC

S9 : ja

S10 : ABCDEF

      

Blog Author - Pushkar Khosla,
Software Developer by Profession with 3.0 Yrs of Experience , through this blog i'am sharing my industrial Java Knowledge to entire world. For any question or query any one can comment below or mail me at pushkar.itsitm52@gmail.com.

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