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Author Question: Analyze the following code.class Test { public static void main(String[] args) { StringBuilder ... (Read 59 times)

karlynnae

  • Hero Member
  • *****
  • Posts: 599
on: May 6, 2020

Question 1

What is displayed by the following code?

String[] tokens = "A,B;C;D".split("[,;]");
for (int i = 0; i < tokens.length; i++)
​System.out.print(tokens[i] + " ");

◦ A,B;C;D
◦ A B C D
◦ A B;C;D
◦ A B C;D

Question 2

Analyze the following code.

class Test {
public static void main(String[] args) {
​StringBuilder strBuf = new StringBuilder(4);
​strBuf.append("ABCDE");
​System.out.println("What's strBuf.charAt(5)? " + strBuf.charAt(5));
}
}

◦ The program has a compilation error because you cannot specify initial capacity in the StringBuilder constructor.
◦ The program has a runtime error because because the buffer's capacity is 4, but five characters "ABCDE" are appended into the buffer.
◦ The program compiles and runs fine.
◦ The program has a runtime error because the length of the string in the buffer is 5 after "ABCDE" is appended into the buffer. Therefore, strBuf.charAt(5) is out of range.
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Marked as best answer by karlynnae on May 6, 2020

diesoon

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Reply #1 on: May 6, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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karlynnae

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Reply 2 on: May 6, 2020
:D TYSM

Dominic

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Reply 3 on: Yesterday
Gracias!

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