Java Custom Methods Exercises

Call the custom function.

                class Main {
  public static void main(String[] args) {
    ""
  }

  public static void printHelloJava(){
    System.out.println("Hello Java!");
  }
}

What is the output of this code?

                class Main {
  public static void main(String[] args) {
    printHelloJava();
    printHelloJava();
  }

  public static void printHelloJava(){
    System.out.println("Hello Java!");
  }
}

Hello Java!
Hello Java! Hello Java!

Complete the custom function definition .

                class Main {
  public static void main(String[] args) {
    printHelloJava();  
  }

  "" printHelloJava(){
    System.out.println("Hello Java!");
  }
}

void public static

What is the output of this Java program?

                class Main {
  public static void main(String[] args) {
    isStockAvailable();  
  }

public static void isStockAvailable() {
  int stockQuantity = 7;
  if(stockQuantity > 0){
      System.out.println("Stock is available.");
    } else {
      System.out.println("Stock is not available.");         
    }
  }
}

Stock is available. Stock is not available.

Define a variable named me and initialize it.

                class Main {
  public static void main(String[] args) {
    isStockAvailable();  
  }

public static void isStockAvailable() {
  String stockQuantity = System.console().readLine("Enter the stock quantity: ");
  
  if(stockQuantity > 0){
      System.out.println("Stock is available.");
    } else {
      System.out.println("Stock is not available.");         
    }
  }
}

It dependes on the user’s input value The program encounters with an error

What is the output of this code?

                class Main {
  public static void main(String[] args) {
    isStockAvailable();  
  }

public static void isStockAvailable() {
  String stockQuantity = System.console().readLine("Enter the stock quantity: ");

  int stockQuantity = Integer.parseInt(stockQuantity);
  
  if(stockQuantity > 0){
      System.out.println("Stock is available.");
    } else {
      System.out.println("Stock is not available.");         
    }
  }
}

It depends on the user’s input The program encounter with an error

What is the output of this Java program?

                class Main {
  public static void main(String[] args) {
    isStockAvailable();  
  }

public static void isStockAvailable() {
  int stockQuantity = Integer.parseInt(System.console().readLine("Enter the stock quantity: "));
 
  if(stockQuantity > 0){
      System.out.println("Stock is available.");
    } else {
      System.out.println("Stock is not available.");         
    }
  }
}

It depends on the user’s input The program encounters with an error

What is the output of this Java program?

                class Main {
  public static void main(String[] args) {    
  }

public static void isStockAvailable() {
  int stockQuantity = Integer.parseInt(System.console().readLine("Enter the stock quantity: "));
 
  if(stockQuantity > 0){
      System.out.println("Stock is available.");
    } else {
      System.out.println("Stock is not available.");         
    }
  }
}

It depends on the user’s input Nothing happens

Java Exercises for Write Your Functions

If you’ve faced difficulties with these exercises, take a look at Write Your Functions Module on my Java course.

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Happy Coding!
Behnam Khani

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Java Custom Methods Exercises

Java Exercises for Write Your Functions