Problem 20 Assume the variable name referen... [FREE SOLUTION]

Chapter 3: Problem 20

Assume the variable name references a String object. Write an if statement that displays "Do I know you?" if the String object contains "Timothy".

Short Answer

Expert verified

Answer: The "contains" method is used to check whether a given String object contains a specific substring or not.

Step by step solution

Define the variable and assign the value to the String object

To begin with, let's create a String object and assign it some value. For this example, let's assume that we have a variable called 'name', which stores the String value. ```java String name = "Hello, Timothy!"; ```

Write the if statement to check for the presence of "Timothy"

Now, we will write an if statement to check whether the String object 'name' contains "Timothy" as a substring or not. We'll use the "contains" method of the String class to accomplish this task. ```java if (name.contains("Timothy")) { // Code to execute if the condition is met } ```

Display "Do I know you?" if the condition is met

As per the exercise, if the String object contains "Timothy", we need to display "Do I know you?". So, within the curly braces of the if statement, we will write a print statement which outputs "Do I know you?". ```java if (name.contains("Timothy")) { System.out.println("Do I know you?"); } ``` So, in this example, as the String object 'name' contains "Timothy", the output would be "Do I know you?". If "Timothy" was not present, nothing would be printed.

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91影视

Assume the variable name references a String object. Write an if statement that displays "Do I know you?" if the String object contains "Timothy".

Short Answer

Step by step solution

Define the variable and assign the value to the String object

Write the if statement to check for the presence of "Timothy"

Display "Do I know you?" if the condition is met

One App. One Place for Learning.

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