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GSSP-JAVA · Question #235

Given a code of a class named PrintString that prints a string. 1. public class PrintString{ 2. public static void main(String args[]){ 3. /insert code here / 4. / insert code here / 5…

The correct answer is A. StringBuilder str= new StringBuilder("123456789"); B. StringBuffer str= new StringBuffer("123456789"). See the full explanation below for the reasoning.

Question

Given a code of a class named PrintString that prints a string. 1. public class PrintString{ 2. public static void main(String args[]){ 3. /*insert code here / 4. / insert code here */ 5. System.out.println(str); 6. } 7. } Which of the following code fragments can be inserted in the class PrintString to print the output "4247"? Each correct answer represents a complete solution. Choose all that apply.

Options

  • AStringBuilder str= new StringBuilder("123456789");
  • BStringBuffer str= new StringBuffer("123456789");
  • CStringBuffer str=new StringBuffer("123456789");
  • DStringBuilder str= new StringBuilder("123456789");
  • EString str="123456789";

How the community answered

(26 responses)
  • A
    77% (20)
  • C
    4% (1)
  • D
    12% (3)
  • E
    8% (2)

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