StringBuilder sb1 = new StringBuilder("123"); 2. String s1 = "123"; 3. // insert code here 4. System.out.println(sb1
Posted: Wed Jul 13, 2022 7:46 pm
a) sb1.append(“abc”); s1.append(“abc”);
b) sb1.append(“abc”); s1.concat(“abc”);
c) sb1.concat(“abc”); s1.append(“abc”);
d) sb1.append(“abc”); s1 = s1.concat(“abc”);
b) sb1.append(“abc”); s1.concat(“abc”);
c) sb1.concat(“abc”); s1.append(“abc”);
d) sb1.append(“abc”); s1 = s1.concat(“abc”);