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1. Given the following Java statement String sl=Java is cool!; Answer the following: a) s1.length(); b) sl.charAt(0); c) s1.indexOf(J); d) s1.substring(8,12)

1. Given the following Java statement String sl="Java is cool!"; Answer the following: a) s1.length(); b) sl.charAt(0); c) s1.indexOf(J); d) s1.substring(8,12)

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