String class: The “String” class provides a number of methods that examines for a string inside of a string. The term “substring” refers to a string that denotes another string’s part. The “startsWith” method would determine whether calling string of object begins with a specific substring. The method returns “true” if string begins with specified substring, it returns “false” otherwise. The “endsWith” method would determine whether calling string would end with a specified substring. The method returns “true” if string ends with specified substring, it returns “false” otherwise. The “regionMatches” method would determine whether specified regions for two strings match. The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed. The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string. Given code: String str1 ="William "; String str2 ="the"; String str3 ="Conqueror"; System.out.println(str1.trim() + str2.trim() + str3. trim()); Explanation: The strings are been stored in variables “str1”, “str2” and “str3”. The strings are been trimmed using “trim()” method. The resultant strings are concatenated using “+” operator. The result of concatenation is been displayed.

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Answer 1

Question

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

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Answer 2

Question

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

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Answer 3

Question

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

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Answer 4

Question

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

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Answer 5

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

Answer 6

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

Answer 7

Chapter 9.3, Problem 9.15CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a specific substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

The method “trim” denotes a built-in function that eliminates leading as well as trailing spaces in string.

Given code:

String str1 ="William ";

String str2 ="the";

String str3 ="Conqueror";

System.out.println(str1.trim() + str2.trim() +

str3. trim());

Explanation:

The strings are been stored in variables “str1”, “str2” and “str3”.

The strings are been trimmed using “trim()” method.

The resultant strings are concatenated using “+” operator.

The result of concatenation is been displayed.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 9.2 - Prob. 9.1CP Ch. 9.2 - Write an if statement that displays the word digit...Ch. 9.2 - Prob. 9.3CP Ch. 9.2 - Write a loop that asks the user, Do you want to...Ch. 9.2 - Prob. 9.5CP Ch. 9.2 - Write a loop that counts the number of uppercase...Ch. 9.3 - Prob. 9.7CP Ch. 9.3 - Modify the method you wrote for Checkpoint 9.7 so...Ch. 9.3 - Look at the following declaration: String cafeName...Ch. 9.3 - Prob. 9.10CP

Solution Summary: The author explains that the "String" class provides methods that examines for a string inside of the string. The "trim" method eliminates leading as well as trailing spaces in strings.

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