java

[abhilashm86]

can the following class be used as a constructor to print the initially assigned string a="original string",
also i can't use println in class alpha to print, so i need to create an object of alpha and then display.......
how to do the same using constructor?


class alpha {
String a="original string";
}

public class let {
static void f( alpha d) {
d.a="abhilash";
}
public static void main(String[] args) {
alpha first=new alpha();
System.out.println(first.a);

alpha str=new alpha();
str.a="abhi";
System.out.println(str.a);

f(str);
System.out.println(str.a);
}
}

[credobyte]

Not sure if it's exactly what you wanted, however, take a look ..


public class let {
public static void main(String args[]) {
alpha first = new alpha();
first.changeString("NOT default");
first.showString();
}
}

class alpha {
String a = "default string";

// constructor
alpha() {
System.out.println(a);
}

// change string
public void changeString(String input) {
a = input;
}

// show string
public void showString() {
System.out.println(a);
}

}

[abhilashm86]

yes i wanted same as above,din't want to pass an object string and display. thanks a lot credobyte.........

[Reiger]

Your terminology is confusing. If you mean the same thing as I do with "constructor" in the context of Java programming then your answer is a non-trivial constructor:


public class Alpha {
public String myString = "default";
/* Trivial default constructor so new Alpha() works */
public Alpha() {}
/* Non trivial parametrized constructor */
public Alpha(String value) {
myString = value;
}
}


However for some reason you are using a static method invoked from main. You can do that, of course:


public class Test {
public static Alpha modifyAlpha(Alpha initial) {
initial.myString = "new value and other modifications here";
return initial;
}

public static void Main (String [] args) {
Alpha a = new Alpha();
System.out.println(a.myString); // default value
a = Test.modifyAlpha(a);
System.out.println(a.myString); // result of call to static method, modifying value
a.myString = "And now for something completely the same.";
System.out.println(a.myString); // result of direct modifications to the value
System.exit(0);
}
}