Java String class methods

Front

Which method would you use to check if two Strings are exactly the same? Options: equals(), equalsIgnoreCase(), toUpperCase(), toLowerCase()

Back

equals()

Front

Which method is used to find the length of a string?

Back

length()

Front

Which data type gets returned from length() method in String class?

Back

int

Front

What is the correct way to find the length of the string "txt"? Options: int len = length(txt); float len = txt.length(); int len = txt.length(); double len = length(txt);

Back

int len = txt.length();

Front

String x = "10";
String y = "20";
String z = x + y;
System.out.println(z);
Guess the output.

Back

1020

Front

Which method is used to find the index of a specified character in a string? Options: charIndex(), indexOf(), findIndex(), searchIndex()

Back

indexOf()

Front

What is the output of the following code?
String str = "Hello";
System.out.println(str.substring(1, 3));

Back

el

Front

What is the output of the following code?
String str = "Hello";
System.out.println(str.indexOf('l'));

Back

2

Front

String word = "A few good men"; What is word.indexOf(“bad”)?

Back

-1

Front

String values are always written in

Back

Double quotes