Common string methods in Java - Interactive Code Practice

ads_click

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the length of the string.

Java

String text = "Hello";
int length = text.[1]();

🎯 Drag options to blanks, or click blank then click option

Asize

BgetLength

Clength

Dcount

Attempts:

3 left

2fill in blank

medium

Complete the code to convert the string to uppercase letters.

Java

String word = "java";
String upper = word.[1]();

🎯 Drag options to blanks, or click blank then click option

AtoLowerCase

BtoUpperCase

Cuppercase

DmakeUpper

Attempts:

3 left

3fill in blank

hard

Fix the error in the code to check if the string starts with "Hi".

Java

String greeting = "Hi there!";
boolean starts = greeting.[1]("Hi");

🎯 Drag options to blanks, or click blank then click option

AstartsWith

BbeginsWith

CstartWith

Dstarts

Attempts:

3 left

4fill in blank

hard

Fill both blanks to extract the substring "cat" from the word "concatenate".

Java

String word = "concatenate";
String part = word.[1](3, [2]);

🎯 Drag options to blanks, or click blank then click option

Asubstring

BsubString

C9

D6

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to create a new string with trimmed spaces and replaced spaces with underscores.

Java

String messy = "  hello world  ";
String clean = messy.[1]().[2](" ", [3]);

🎯 Drag options to blanks, or click blank then click option

Atrim

Breplace

C"_"

Dstrip

Attempts:

3 left