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public class FirstProgram public static void main(Stringl args) t String s1- "Java Programming Rocks!"; String s2-".@#$%8"; String s3"0123456789"; //First line of output int size s3.length0 s2.length0 + 4; System.out.println (size) //Second line of output System.out.println(s3.charAt(7); //Third line of output int iSum s1.indexOf(P) + s3.indexOf(5) System.out.printin(iSum); //Fourth line of output String sSubstr s1.substring(2.4) + s3.substring(0,5); System.out.println(s Substr); //Fifth line of output boolean bEquals s3.substring(2,6).equals("2345"); System.out.println(bEquals)