Answered

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What is the output of the following code? Assume the Rectangle class exists and all the methods called below exist and work as expected.

ArrayList blah = new ArrayList ();
blah.add( new Rectangle(3,5) );
blah.add( new Rectangle(2,15) );
blah.add( new Rectangle(5,5) );
double x=0;

System.out.println(blah.size());
for(Rectangle s: blah) x+=s.area();
System.out.println(x);

Sagot :

tonb

Answer:

3

70.0

Explanation:

There will be 3 elements (Rectangle instances) in the list.

The sum of the areas x will contain 3*5 + 2*15 + 5*5 = 70 and will be printed as a double.

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