String s1 = "21" + "8" + "54";System.out.println(s1);String s2 = "21" + '8' + "54";System.out.println(s2);String s3 = "21" + 8 + "54";System.out.println(s3);
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String s1 = "21" + "8" + "54";System.out.println(s1);String s2 = "21" + '8' + "54";System.out.println(s2);String s3 = "21" + 8 + "54";System.out.println(s3);
21854
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