asked on

generate percentage in java

hi guys

I have a requirment where user has 30 answers to fill in a UI form. The answers are then stored in a java object AnswerVO. finally the answers are stored in a list

List answerList = new ArrayList()
for int i=0; i< 30; i++
{
answerList.add(AnswerVO) --put all the answers in a list.
}

The answer is stored in AnswerVO
public Class AnswerVO {
public string answervalue;
set()
get()
}

Based on the number of answers filled out by users i have to generate a percentage.
any idea how best that can be done?

thanks

CEHJ

A percentage of what though?

CEHJ

If it's a percentage of the complete number of answers, it would be

double percent = n / 30.0 * 100; // (n is number of answers filled in)

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Jay Roy

ASKER

i have to check how many answers are NOT empty (meaning they are filled with answers) and then calcualte how many of the answers have been filled out of the 30 and generate a percentage completed

for_yan

You probably check how many correct answers, say you have method
returning boolean for correct answer and then
something like that:

int count = 0;

for(int j=0; j<answerList.size(); j++){
AnswrVO aa = (AnswerVO)answerLits.get(j);
if(aa.correct())count++;
}

float percent = ((float)count/(float)answerList.size())*100.0

Sistem.out.println("Good answers: " + percent + "%");

for_yan

Then you should hav ethe checck method if answer is responded
int count = 0;

for(int j=0; j<answerList.size(); j++){
AnswrVO aa = (AnswerVO)answerLits.get(j);
if(aa.getAnswerValue() != null)count++;
}

float percent = ((float)count/(float)answerList.size())*100.0

Sistem.out.println(" answers responded: " + percent + "%");

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CEHJ

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SOLUTION

for_yan

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