4. Logical Operators¶

Drag the definition from the left and drop it on the correct method on the right. Click the "Check Me" button to see if you are correct.
• joins two conditions; is true if both of the conditions are true
• logical and
• a Boolean expression often used to determine if code should be executed or not
• conditional
• an expression that is either true or false
• Boolean expression
• an operator that joins two or more conditions together with logical and's or or's
• logical operator
• used to execute code when one of two conditions is true
• logical or
• one or more statements enclosed in curly braces
• block of statements
• used to evaluate a conditional and execute code if a condition is true
• if

        Q-39: Q-38: The following program segment should print either "You can go out" if you don't have any homework and have cleaned and otherwise should print "You can not go out". But the blocks have been mixed up and includes one extra block that is not needed in a correct solution.  Drag the needed blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        boolean haveHomework = false;
        boolean cleaned = true;
---
        if (!haveHomework && cleaned)
---
        if (haveHomework && cleaned) #paired
---
            System.out.println("You can go out");
---
        else
---
            System.out.println("You can not go out");
---
    }
}
        

        Q-41: Q-40: The main method in the following class should print if x is in the range of 1 to 10 (inclusive) or not. But, the blocks have been mixed up and includes an extra block that isn't needed in the solution.  Drag the needed blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        int x = 3;
---
        if (x >= 1 && x <= 10)
---
        if (x >= 1 || x <= 10) #paired
---
            System.out.println("1 <= x <= 10");
---
        else
---
            System.out.println("x is not in range");
---
    }
}
        

        Q-43: Q-42: The main method in the following class should print if your favorite food is junk food (pizza or wings) or not. But, the blocks have been mixed up and includes an extra block that is not needed in a correct solution.  Drag the needed blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        String favFood = "kale";
        boolean favPizza = favFood.equals("pizza");
        boolean favWings = favFood.equals("wings");
---
        if (favPizza || favWings)
---
        if (favPizza && favWings) #paired
---
            System.out.println("You fav is junk food");
---
        else
---
            System.out.println("You fav is not junk");
---
    }
}
        

        Q-45: Q-44: The main method in the following class should print your fine if you are speeding.  If you are going over 65 but less than 75 the fine is 50.  If you are going at least 75 and less than 85 the fine is 100.  Over that the fine is 200.   But, the blocks have been mixed up and includes two extra blocks that aren't needed in the solution.  Drag the needed blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        int speed = 90;
---
        if (speed > 65 && speed < 75)
---
        if (speed > 65 || speed < 75) #paired
---
            System.out.println("50");
---
        else if (speed >= 75 && speed < 85)
---
        else if (speed >= 75 || speed < 85) #paired
---
            System.out.println("100");
---
        else
            System.out.println("200");
---
    }
}
        

        Q-47: Q-46: The main method in the following class should print if you can text now.  You can text if you are not driving and not eating. But, the blocks have been mixed up and includes an extra block that isn't needed in the solution.  Drag the needed blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        boolean driving = true;
        boolean eating = false;
---
        if (!driving && !eating)
---
        if (!driving || !eating) #paired
---
            System.out.println("Can text now");
---
        else
---
            System.out.println("Can't text now");
---
    }
}
        

        Q-49: Q-48: The main method in the following class should print if your name starts with a vowel or not. But, the blocks have been mixed up and there may be an extra block.  Drag the blocks from the left and put them in the correct order on the right.  Click the Check Me button to check your solution.
public class Test1
{
    public static void main(String[] args)
    {
---
        String name = "Julian";
        String firstLetter = name.substring(0,1);
        String lowerFirst = firstLetter.toLowerCase();
---
        boolean aF = lowerFirst.equals("a");
        boolean eF = lowerFirst.equals("e");
        boolean iF = lowerFirst.equals("i");
        boolean oF = lowerFirst.equals("o");
        boolean uF = lowerFirst.equals("u");

---
        if (aF || eF || iF || oF || uF)
---
        if (aF && eF && iF && oF && uF) #paired
---
            System.out.println("Starts with a vowel");
---
        else
---
            System.out.println("Starts with a consonant");
---
    }
}