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Java Package

Question : 2

Total: 16

1. public String toString() {
2.   StringBuffer buffer = new StringBuffer();
3.   buffer.append('<');
4.   buffer.append(this.name);
5.   buffer.append('>');
6.   return buffer.toString();
7. }

Which statement is true?

This code is NOT thread-safe.
The programmer can replace StringBuffer with StringBuilder with no other changes.
This code will perform poorly. For better performance, the code should be rewritten: return "<" + this.name + ">";
This code will perform well and converting the code to use StringBuilder will not enhance the performance.

Validate

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