Java Double summation is not working properly

Question

public class Test {
     public static void main(String[] args) {
          double d = 0.6+4.6;
          System.out.println(d);
          /*float d2 = (float)(0.6d+4.6f);
          System.out.println(d2*1.0f);*/
This is printing 5.199999999999999.
I am using Java 1.6. Please suggest me how to do these type of double operations.

Answer 1

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If d was as defined in the original post you don't get the expected result
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That statement is not quite correct. Of course you get the expected result.
Perhaps you meant to say 'you don't get the OP's expected result'?
And I did read it all before I answered but it seems you misread Kayaman's response.
Kayaman said
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. . .you can't just do
if(d == 5.2)
with floating point numbers.
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and, as I showed, that is clearly incorrect. You not only can do that but that is how you would check for equality with a particular value.
The OP concluded
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if the program is like this, false is printing. But the answer should be true.
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I think we all agree that the OP is wrong that the answer should be true.
But he is not wrong because you can't do 'd == 5.2' with floating point numbers.
OP is wrong because comparing two numbers like 'd' and '5.2' that have any significant digits that differ will not result in equality.
And neither Kayman nor you gave the OP that real reason why the code took a different branch than what the OP expected.
My statement
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The OP used 5.199999999999999 and that isn't equal to 5.2 so you take the FALSE branch.
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is EXACTLY the explanation for why the OP's assumtion is wrong.
The reason has nothing to do with the Java syntax.