return boolean in function in java

Question

i make a small program in java about Metro Station in Egypt so i specified the lines the passeger take a metro from it and the line they go to by boolean in default at classes boolean value is false but i want to make 4 variable changing in Main

this code specify the index of the stations in line 1 and make source1 true in the same time it works if i write it inline but when i write it in function always source1 is false as defualt and i can solve it please help

public void Searchinline1(String []line1,String sourceStation,String destinationStation,boolean source1,boolean destination1,int sourceindex,int destinationindex) {

    for (int i = 0; i < line1.length; i++) {
        if (sourceStation.equalsIgnoreCase(line1[i])) {
            source1=true;
            sourceindex=i;
        }
        if (destinationStation.equalsIgnoreCase(line1[i])) {
            destination1=true;
            destinationindex=i;
        }
    }

}

can you post the link of "equalsIgnoreCase" method? And what do you want to achieve? — João Vilaça, Aug 24 '16 at 16:15
did not understand..could you provide expected output with current output — Ravi, Aug 24 '16 at 16:15
In Java, the method parameters are passed by value not by reference. — David Pérez Cabrera, Aug 24 '16 at 16:15
Setting `source1=true` and/or `destination1=true` has no effect outside of the method. — Kidiskidvogingogin, Aug 24 '16 at 16:17
source1 in the method is not equals to the boolean that you declared in the class. You should consider using `this.source1` and `this.destination1` instead. — Dylan Law, Aug 24 '16 at 16:18
While the *fact* that the variables are passed by value is what is causing your problem, the question then becomes, are you attempting to return just the boolean, or all three of the boolean, destination index, and source index? — Makoto, Aug 24 '16 at 16:18
If your bool variables and int indexes are declared in some class, access it directly by Object.source1, etc.. instead of sending as parameter. — Sgene9, Aug 24 '16 at 16:19
@JoãoVilaça i write this method to ignore if some one write - sadat station instead of Sadat station — Sameh Mohamed Omr, Aug 24 '16 at 16:19
@jWeaver the output is the station between the source and destination and the time between them — Sameh Mohamed Omr, Aug 24 '16 at 16:21
You should change your class variables by refering to 'this'. And you can have that function return an array of booleans, with your answer, and then access it from within other method. — João Vilaça, Aug 24 '16 at 16:21
@JoãoVilaça "equalsIgnoreCase" is in https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#equalsIgnoreCase-java.lang.String- — Sgene9, Aug 24 '16 at 16:21
did a quick search and got [this](http://stackoverflow.com/questions/5614562/how-to-do-the-equivalent-of-pass-by-reference-for-primitives-in-java) The checked answer will help. — Sgene9, Aug 24 '16 at 16:23

score 0 · Accepted Answer · answered Aug 24 '16 at 17:14

Declare variables in your class and use this to change it's value.
this.source1 = true;

According to oracle

Within an instance method or a constructor, this is a reference to the current object — the object whose method or constructor is being called.

You can read official doc for this keyword http://docs.oracle.com/javase/tutorial/java/javaOO/thiskey.html

return boolean in function in java

1 Answers1

According to oracle