String (byte[] bytes, int offset, int length)

public String(byte bytes[], int offset, int length)

Constructs a new String by decoding the specified subarray of bytes using the platform's default charset. Parameter bytes represents the bytes to be decoded into characters, offset represents the index of the first byte to decode and length represents the number of bytes to decode.

class StringConstructor4{
 public static void main(String args[]){
  byte data[] = new byte[26];
  String s1;
  int count = 0;
  
  for(byte b = 97; b < 123; b++){
   data[count] = b;
   count++;
  }
  
  s1 = new String(data, 5, 10);
  System.out.println("s1 = " +s1);
 }
}

Output

s1 = fghijklmno

1. Throws IndexOutOfBoundsException If the offset and the length arguments index characters outside the bounds of the bytes array.

class StringConstructor4IndexOut{
 public static void main(String args[]){
  byte data[] = new byte[26];
  String s1;
  int count = 0;
  
  for(byte b = 97; b < 123; b++){
   data[count] = b;
   count++;
  }
  
  s1 = new String(data, 18, 9);
  System.out.println("s1 = " +s1);
 }
}

Output

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String ind
ex out of range: 27
        at java.lang.String.checkBounds(String.java:373)
        at java.lang.String.<init>(String.java:533)
        at StringConstructor4IndexOut.main(StringConstructor4IndexOut.java:12)

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