CODEWITHSUNDEEP
javastringstringbuilder
Joker
Joker

Reputation: 11150

Why there is no StringBuilder.replace() in Java

From the post String Builder Replace() is faster then string replace() in .NET language

I want to know if same answer is valid for java as well or not.

I checked and found

StringBuilder builder = ...;
builder = new StringBuilder(builder.toString().replace("from", "to"));

is inefficient as StringBuilder.toString() is an expensive operation.

Why JAVA does not have replace method in string builder class ?

Upvotes: 2

Views: 459

Answers (1)

Youcef LAIDANI
Youcef LAIDANI

Reputation: 60046

From the documentation :

StringBuilder objects are like String objects, except that they can be modified. Internally, these objects are treated like variable-length arrays that contain a sequence of characters. At any point, the length and content of the sequence can be changed through method invocations

for that the StringBuilder::replace is like :

public StringBuilder replace(int start, int end, String str)

Instead of String::replace, because it is treated like an array and not a String

Upvotes: 3

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