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int n = 110101;
String s = "" + n;
s = s.replace("1", "");
s = s.replace("0", "");
if(s.length() == 0)
System.out.print(n + " is binary);
else System.out.print(n + " is not binary");
May 26, 2014, 12:46:36 PM
Posted to How to check if a given Number is Binary in Java? [Solved] Example