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string buffer

 
anushree ari
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Posts: 98
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hi guys,

code:
int a = 0;
StringBuffer s = new StringBuffer("Hello");
if ((s.length() < 10) | (s.append(" world").equals("Well done")))
; // do nothing
System.out.println("Value is - " + s);
in the above code, i thought the result is "Hello",b'cas string buffer doesn't override the equals method, so the result is same as s. but the ans is helloworld, how?
anybody correct me?
thx in advance
 
Ron Newman
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s.append(" world") modifies the content of the StringBuffer s.
 
Jessica Sant
Sheriff
Posts: 4313
Android IntelliJ IDE Java
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s.length() IS less than 10 -- so that evalutates to true
then things get evaluated from left to right for the 2nd half of the equation:
s.append(" world") -- so at this point s is "Hello world"
s.equals("Well done") -- like you said the .equals method is not overridden in StringBuffer and this half of the equation evalutes to false
But... what would happen if the if statement looked like this:
if ((s.length() < 10) || (s.append(" world").equals("Well done")))
 
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