Constructors in java

Question

How can we use a constructor like in the main method.
public class Testing123
{
private String hi;
Testing123(){
this.setHi("hi");

}
}

public class Result
{
public static void main ( String [] args )
{
Testing123 TEST = new Testing123();
}
}

Answer 1

if you are asking why your code doesnt work, there is not setHi() method
Testing123(){
this.setHi("hi");

System.out.println (hi);
}
void setHi(String hi) {
this.hi = hi;
}

Answer 2

https://code.sololearn.com/cFzbl0Y6iA6h/?ref=app

Answer 3

You can simply write-

Testing123(){
System.out.print("hi");
}