What is the initial capacity of the following string builder?
StringBuilder sb = new StringBuilder("Able was I ere I saw Elba.");
Consider the following string:
String hannah = "Did Hannah see bees? Hannah did.";
What is the value displayed by the expression hannah.length()
?
What is the value returned by the method call hannah.charAt(12)
?
Write an expression that refers to the letter b
in the string
referred to by hannah
.
How long is the string returned by the following expression? What is the string?
"Was it a car or a cat I saw?".substring(9, 12)
In the following program,
called
ComputeResult
, what is the value of result
after each numbered line executes?
public class ComputeResult { public static void main(String[] args) { String original = "software"; StringBuilder result = new StringBuilder("hi"); int index = original.indexOf('a'); /*1*/ result.setCharAt(0, original.charAt(0)); /*2*/ result.setCharAt(1, original.charAt(original.length()-1)); /*3*/ result.insert(1, original.charAt(4)); /*4*/ result.append(original.substring(1,4)); /*5*/ result.insert(3, (original.substring(index, index+2) + " ")); System.out.println(result); } }
Show two ways to concatenate the following two strings
together to get the string "Hi, mom."
:
String hi = "Hi, "; String mom = "mom.";
Write a program that computes your initials from your full name and displays them.
An anagram is a word or a phrase made by transposing the letters of another word or phrase; for example, "parliament" is an anagram of "partial men," and "software" is an anagram of "swear oft." Write a program that figures out whether one string is an anagram of another string. The program should ignore white space and punctuation.