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Difference between String & StringBuffer
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Answer / niranjanravi
String objects are constants and immutable where as
StringBuffer objects are not.StringBuffer Class supports
growable and modifiable string where as String class
supports constant strings. Strings once created we cant
modify them. Any such attempt will lead to the creation of
new strings.Where as StingBuffer objects after creation
also can be able to delete oo append any characteres to
it.String values are resolved at run time where as
StringBuffer valuesc are resolved at compile time.So if you
know the exact size of the string to be appended it is
better to go for String objects.
| Is This Answer Correct ? | 194 Yes | 19 No |
Answer / ramanareddy333
strings are immutable where as string buffer is a
mutable,that means strings having the fixed size and string
buffer size is varied(growable).
| Is This Answer Correct ? | 119 Yes | 16 No |
Answer / navneet raushan
The great difference between String and string buffeer is
that String buffer is thread safe where as String is not
thread safe as well as string is immutable and String
buffewr is mutable.
| Is This Answer Correct ? | 77 Yes | 12 No |
Answer / vijayakumar chinnasamy
String :
1.Content does not change –immutable
2.final class (cant subclass)
3.compareTo() - compare the string
result : < , > , = --- dictionary order
4.reverse() not available
5.is not thread safe
Criteria to choose among String
If your text is not going to change use a string Class
because a String object is immutable.
StringBuffer:
1. Content can be change Mutable
2.Final class.
3. compareTo() Not available
4.reverse() available
Allocates room for 16-addition character space when no
specific length is specified.
5.is thread safe
Criteria to choose StringBuffer
If your text can changes, and will be accessed from
multiple threads, use a StringBuffer because StringBuffer is
synchronous
| Is This Answer Correct ? | 52 Yes | 9 No |
Answer / nilesh bhil( mca) amravati
String is immutable.
It means that we cant change the content of String once created. If we try append a new string using + operator
then it creates new String object.
ex.
string s = new String("Java");
s = s + "bean" ;// this statement creates new object.
String class does not have method that append new String to old String in object.
where as StringBuffer class is mutable. It means that we can add new String to it using append() method.
ex.
StringBuffer sb = new StringBuffer("Java");
sb.append("Bean");
| Is This Answer Correct ? | 38 Yes | 3 No |
Answer / ravikiran(aptech mumbai)
String is immutable where as StringBuffer is mutable.Means
until the newly created string object is reffered by a
reference variable it's value is uncahangable
| Is This Answer Correct ? | 34 Yes | 7 No |
Answer / bubun
string is slower in case of concatenation but stringBuffer
is faster than string.
| Is This Answer Correct ? | 23 Yes | 2 No |
Answer / devang bhagdev
in string class that is synchronized is not allows and i stringbuffer class synchronized is allows us
| Is This Answer Correct ? | 17 Yes | 3 No |
Answer / kunal chwala
It means that we cant change the content of String once created. If we try append a new string using + operator
then it creates new String object.
ex.
| Is This Answer Correct ? | 13 Yes | 5 No |
Answer / tamanna reshmi
The main difference of string class and StringBuffer is
that....while STRING class creates strings
fixed_length,STRINGBUFFER creates strings of flexible length
that can be modified in terms of both length and
content.........
| Is This Answer Correct ? | 3 Yes | 0 No |
public class Test { public static void main(String[] args) { int countA = 0; int countB = 0; int countC = 0; int countD = 0; int countE = 0; int countF = 0; int countG = 0; int countH = 0; int countI = 0; int countJ = 0; int countK = 0; int countL = 0; int countM = 0; int countN = 0; int countO = 0; int countP = 0; int countQ = 0; int countR = 0; int countS = 0; int countT = 0; int countU = 0; int countV = 0; int countW = 0; int countX = 0; int countY = 0; int countZ = 0; } } Can anybody tell me any alternate solution(like loop or something) to automate this initialization process. Ex:- for(char chr='A';chr<='Z'; chr++) { (int) String "count"+chr = 0; }
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