Correct Sintax for JOptionPane
Hey! I'm a newby on java and i'm learning using a really old manual that my HS gave me to learn. My problem is that i can't get to the correct sintax to use a JOptionPane. If i use the one on the book i'm given like a 293837 errors but i couldn't find a clear explanation on google. Can anyone help me? Thx a lot :))
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I need more context please
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