Breaking News: Grepper is joining You.com. Read the official announcement!

Default parameters in Java

Add Answer

Beautiful Bug answered on March 11, 2021 Popularity 10/10 Helpfulness 2/10

answer Default parameters in Java

related default argument in java

related java default values

Default parameters in Java

Comment

// Foo.java
public class Foo {
    // For a constructor
    public Foo() { this(4); }
    public Foo(int x) {
        System.out.println("Initializing Foo with " + x + ".");
    }

    // For a method
    public void identifyString() { identifyString("Grepper is cool!"); }
    public void identifyString(String source) {
        int length = source.length();

        if (length < 0)
            System.out.println("what the heck");
        else if (length == 0)
            System.out.println("Source is empty!");
        else if (length == 1)
            System.out.println("Source is a char!");
        else
            System.out.println("Source is a String!");
    }
}

// Main.java
public class Mainf {
    public static void main(String[] args) {
        Foo foo = new Foo();
        foo.identifyString();
    }
}


/* OUTPUT:
    Initializing Foo with 4.
    Source is a string!
*/

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: default-parameters java

Link to this answer
Share Copy Link

Contributed on Feb 19 2022

Beautiful Bug

0 Answers Avg Quality 2/10

Closely Related Answers

default argument in java

Comments(1)

Short answer: No.

Fortunately, you can simulate them.
  
-  use method overloading
-  allow nulls as an input
-  declare a method with Java Varargs

To know how to do those, check : 
	http://dolszewski.com/java/java-default-parameters/

Popularity 10/10 Helpfulness 4/10 Language java

Source: dolszewski.com

Tags: default

Link to this answer
Share Copy Link

Contributed on Sep 01 2021

night owl

0 Answers Avg Quality 2/10

java default values

Comment

No, the structure you found is how Java handles it (that is, with overloading instead of default parameters).

For constructors, See Effective Java: Programming Language Guide's Item 1 tip (Consider static factory methods instead of constructors) if the overloading is getting complicated. For other methods, renaming some cases or using a parameter object can help. This is when you have enough complexity that differentiating is difficult. A definite case is where you have to differentiate using the order of parameters, not just number and type.

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java

Link to this answer
Share Copy Link

Contributed on Mar 11 2021

Santino

0 Answers Avg Quality 2/10

Default parameters in Java

Contents

More Related Answers

Default parameters in Java

Closely Related Answers

default argument in java

java default values

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.