this

[asif zia]

Assalam O Alekum:
i have problem in this keyword.
public class MyClass{
public MyClass(){
this("hello); // why this keyword write the first line.
SOP("thanks");
}
public MyClass(String str){
SOP(str);
}
}

[sona gold]

Originally posted by asif zia:
Assalam O Alekum:
i have problem in this keyword.
public class MyClass{
public MyClass(){
this("hello); // why this keyword write the first line.
this or super if used in the constructor should be the first line
here we are calling the other constructor of the current class which takes a string as a parameter. (that is the constructor
public MyClass(String str)
hope it is clear
SOP("thanks");
}
public MyClass(String str){
SOP(str);
}
}

[Ravindra Mohan]

Hi Asif,
The keyword this is used here because it calls the constructor
marked '2' please see my code below.

public class MyClass{
              public MyClass(){    // constructor '1'
              this("hello); // this keyword will make the call to  constructor with string as the argument ie. it will call constructor '2'
              SOP("thanks");
              }
              public MyClass(String str){    // constructor 2
              SOP(str);
              }
              }

Hope this clarifies the issue.
Ravindra Mohan.