1. String sentence; String str1, str2, str3, str4; int length1; sentence = \"Fir

Question

1.

String sentence;

String str1, str2, str3, str4;

int length1;

sentence = "First exam is on Monday.";

str1 = sentence.substring(6, 16);

str2 = str1.substring(0, 4);

str3 = sentence.substring(0,13);

str4 = str3.indexOf("exam");

length1 = sentence.length();

Based on the code above, what is the value of str4?

2.

String sentence;

String str1, str2, str3, str4;

int length1;

sentence = "First exam is on Monday.";

str1 = sentence.substring(6, 16);

str2 = str1.substring(0, 4);

str3 = sentence.substring(0,13);

str4 = str3.indexOf("exam");

length1 = str2.length();

Based on the code above, what is the value of length1?

Explanation / Answer

str3 contains "First exam is"
str4 contains str3 index of "exam" Then the index position of "exam" is 6

what is the value of str4 is 6

str1 contains "exam is on"
str2 contains str1 substring of "exam"
Then the length of str2 is 4

the value of length1 is 4

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