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Q. In the following Java code, which code fragment should be inserted at line 3 so that the output will be:

Code:
"123abc 123abc"?
1. StringBuilder sb1 = new StringBuilder("123");
2. String s1 = "123";
3. // insert code here
4. System.out.println(sb1 + " " + s1);
  • (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");
  • Correct Answer - Option(D)
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  • Filed under category Java
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