Class without no-arg constructor

Reports classes without a constructor that takes no arguments (i.e. has no parameters). No-arg constructors are necessary in some contexts. For example, if a class needs to be created using reflection.

Example:

public class Bean {
  private String name;

  public Bean(String name) {
    this.name = name;
  }
}

Use the checkbox below to ignore classes without explicit constructors. The compiler provides a default no-arg constructor to such classes.

Inspection options

Option	Type	Default
Ignore if class has default constructor	Checkbox	true

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023