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Java Extended
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Course Content

Java Extended

Java Extended

1. Deep Java Structure
How does the compiler works?Data Transfer in JavaFinal KeywordImporting LibrariesUsing Libraries In Our CodeTernary OperatorEnhanced Switch Statement
2. Methods
What is a Method?Creating Our Own MethodsChallenge: Names Starting with Letter BVoidMethods PracticeMethod Overloading RecursionFind Maximum and Minimum in Array Challenge
3. String Advanced
Deeper into StringMethod split()Uppercase Even Words ChallengeindexOf() methodCharacter Indices Sum Challengetrim() MethodEmail Validation
4. Classes
What is class?Main Class and MethodAccess modifiersClass CreationCat Meowing ChallengeConstructorTeam Constructor ChallengeMethod toString()Parrot Information Display Challenge
5. Classes Advanced
Complex Classes UsagePet and Owner Relationship ChallengePrivate ModifierAnimal Information Display ChallengeGetter and SetterCountry Information Management ChallengeSummary

bookTernary Operator

How can we shorten an if-else statement?

The if-statement may not always look elegant, but Java provides a faster and more convenient way to check conditions. It is called the ternary operator, and it has the following syntax:

First, we set a condition, for example, 10 > 5, and then we put a question mark ? after it. If the condition evaluates to true, we go to the true block, for example, System.out.println("That's true");. If the condition evaluates to false, we go to the false block, where we might have something like System.out.println("That's not true");.

Let's analyze a more practical example:

java

Main

copy

              
12345678

            
package com.example;

public class Main {
    public static void main(String[] args) {
      	System.out.println(10 > 5 ? "That's true" : "That's false");
        System.out.println(5 > 6 ? "That's true" : "That's false");
    }
}

You may have noticed that we used the ternary operator inside the System.out.println(); statement. That's the main purpose of using the ternary operator - you can use it within output statements to significantly reduce the amount of code.

We can also use the ternary operator when initializing or returning values. You'll learn more about returning values in the next section when you will study methods.

Example of using ternary operator when initializing value:

java

Main

copy

              
12345678910

            
package com.example;

public class Main {
    public static void main(String[] args) {
        final int a = 10 > 2 ? 5 : 2;
        final int b = 10 < 2 ? 5 : 2;
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

Below is an example code where the ternary operator is replaced with a regular if-statement to help you better understand how it works:

java

Main

copy

              
1234567891011121314151617181920

            
package com.example;

public class Main {
    public static void main(String[] args) {
        int a = 0;
        int b = 0;
        if (10 > 2) {
            a = 5;
        } else {
            a = 2;
        }
        if (10 < 2) {
            b = 5;
        } else {
            b = 2;
        }
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

The result is the same, but you can see how much space we save by using the ternary operator.

Task

  1. Write a code that prints true to the screen if the string contains the word Florida, or false if the string does not contain this word.
  2. Use the ternary operator to practice with it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 1. Chapter 6
toggle bottom row

bookTernary Operator

How can we shorten an if-else statement?

The if-statement may not always look elegant, but Java provides a faster and more convenient way to check conditions. It is called the ternary operator, and it has the following syntax:

First, we set a condition, for example, 10 > 5, and then we put a question mark ? after it. If the condition evaluates to true, we go to the true block, for example, System.out.println("That's true");. If the condition evaluates to false, we go to the false block, where we might have something like System.out.println("That's not true");.

Let's analyze a more practical example:

java

Main

copy

              
12345678

            
package com.example;

public class Main {
    public static void main(String[] args) {
      	System.out.println(10 > 5 ? "That's true" : "That's false");
        System.out.println(5 > 6 ? "That's true" : "That's false");
    }
}

You may have noticed that we used the ternary operator inside the System.out.println(); statement. That's the main purpose of using the ternary operator - you can use it within output statements to significantly reduce the amount of code.

We can also use the ternary operator when initializing or returning values. You'll learn more about returning values in the next section when you will study methods.

Example of using ternary operator when initializing value:

java

Main

copy

              
12345678910

            
package com.example;

public class Main {
    public static void main(String[] args) {
        final int a = 10 > 2 ? 5 : 2;
        final int b = 10 < 2 ? 5 : 2;
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

Below is an example code where the ternary operator is replaced with a regular if-statement to help you better understand how it works:

java

Main

copy

              
1234567891011121314151617181920

            
package com.example;

public class Main {
    public static void main(String[] args) {
        int a = 0;
        int b = 0;
        if (10 > 2) {
            a = 5;
        } else {
            a = 2;
        }
        if (10 < 2) {
            b = 5;
        } else {
            b = 2;
        }
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

The result is the same, but you can see how much space we save by using the ternary operator.

Task

  1. Write a code that prints true to the screen if the string contains the word Florida, or false if the string does not contain this word.
  2. Use the ternary operator to practice with it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 1. Chapter 6
toggle bottom row

bookTernary Operator

How can we shorten an if-else statement?

The if-statement may not always look elegant, but Java provides a faster and more convenient way to check conditions. It is called the ternary operator, and it has the following syntax:

First, we set a condition, for example, 10 > 5, and then we put a question mark ? after it. If the condition evaluates to true, we go to the true block, for example, System.out.println("That's true");. If the condition evaluates to false, we go to the false block, where we might have something like System.out.println("That's not true");.

Let's analyze a more practical example:

java

Main

copy

              
12345678

            
package com.example;

public class Main {
    public static void main(String[] args) {
      	System.out.println(10 > 5 ? "That's true" : "That's false");
        System.out.println(5 > 6 ? "That's true" : "That's false");
    }
}

You may have noticed that we used the ternary operator inside the System.out.println(); statement. That's the main purpose of using the ternary operator - you can use it within output statements to significantly reduce the amount of code.

We can also use the ternary operator when initializing or returning values. You'll learn more about returning values in the next section when you will study methods.

Example of using ternary operator when initializing value:

java

Main

copy

              
12345678910

            
package com.example;

public class Main {
    public static void main(String[] args) {
        final int a = 10 > 2 ? 5 : 2;
        final int b = 10 < 2 ? 5 : 2;
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

Below is an example code where the ternary operator is replaced with a regular if-statement to help you better understand how it works:

java

Main

copy

              
1234567891011121314151617181920

            
package com.example;

public class Main {
    public static void main(String[] args) {
        int a = 0;
        int b = 0;
        if (10 > 2) {
            a = 5;
        } else {
            a = 2;
        }
        if (10 < 2) {
            b = 5;
        } else {
            b = 2;
        }
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

The result is the same, but you can see how much space we save by using the ternary operator.

Task

  1. Write a code that prints true to the screen if the string contains the word Florida, or false if the string does not contain this word.
  2. Use the ternary operator to practice with it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

How can we shorten an if-else statement?

The if-statement may not always look elegant, but Java provides a faster and more convenient way to check conditions. It is called the ternary operator, and it has the following syntax:

First, we set a condition, for example, 10 > 5, and then we put a question mark ? after it. If the condition evaluates to true, we go to the true block, for example, System.out.println("That's true");. If the condition evaluates to false, we go to the false block, where we might have something like System.out.println("That's not true");.

Let's analyze a more practical example:

java

Main

copy

              
12345678

            
package com.example;

public class Main {
    public static void main(String[] args) {
      	System.out.println(10 > 5 ? "That's true" : "That's false");
        System.out.println(5 > 6 ? "That's true" : "That's false");
    }
}

You may have noticed that we used the ternary operator inside the System.out.println(); statement. That's the main purpose of using the ternary operator - you can use it within output statements to significantly reduce the amount of code.

We can also use the ternary operator when initializing or returning values. You'll learn more about returning values in the next section when you will study methods.

Example of using ternary operator when initializing value:

java

Main

copy

              
12345678910

            
package com.example;

public class Main {
    public static void main(String[] args) {
        final int a = 10 > 2 ? 5 : 2;
        final int b = 10 < 2 ? 5 : 2;
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

Below is an example code where the ternary operator is replaced with a regular if-statement to help you better understand how it works:

java

Main

copy

              
1234567891011121314151617181920

            
package com.example;

public class Main {
    public static void main(String[] args) {
        int a = 0;
        int b = 0;
        if (10 > 2) {
            a = 5;
        } else {
            a = 2;
        }
        if (10 < 2) {
            b = 5;
        } else {
            b = 2;
        }
        System.out.println("Variable 'a' has value: " + a);
        System.out.println("Variable 'b' has value: " + b);
    }
}

The result is the same, but you can see how much space we save by using the ternary operator.

Task

  1. Write a code that prints true to the screen if the string contains the word Florida, or false if the string does not contain this word.
  2. Use the ternary operator to practice with it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 1. Chapter 6
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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