How to return 2 values

[devinaren]

How can i return 2 values in below code:

I want to return both x and y. How can I do that?

public boolean populateTab()
{
int tabIndex = _tabPanel.getSelectedIndex();
switch (tabIndex)
{
case BulletinConstants.INPUT_TAB_INDEX:
_bulletinItemTab.init(null);
x = true;
y = false;
Log.enter(getClass(),"Tab moved to Input");
break;
case BulletinConstants.RELAY_TAB_INDEX:
_relayTabAdapter.setLogger(getLogger());
_bulletinRelayTab.init();
Log.enter(getClass(),"Tab moved to Relay");
y = true;
x = false;
break;
default:
break;
}
return x;// I want to return both x and y;
}

[r035198x]

How can i return 2 values in below code:

I want to return both x and y. How can I do that?

public boolean populateTab()
{
int tabIndex = _tabPanel.getSelectedIndex();
switch (tabIndex)
{
case BulletinConstants.INPUT_TAB_INDEX:
_bulletinItemTab.init(null);
x = true;
y = false;
Log.enter(getClass(),"Tab moved to Input");
break;
case BulletinConstants.RELAY_TAB_INDEX:
_relayTabAdapter.setLogger(getLogger());
_bulletinRelayTab.init();
Log.enter(getClass(),"Tab moved to Relay");
y = true;
x = false;
break;
default:
break;
}
return x;// I want to return both x and y;
}

1.) Use code tags when posting code
2.) Methods can only return one value in Java. You can however return an array or a composite object e.g you could define a class called TwoBooleans which stores two booleans and then return that instead.

[JosAH]

Why not 'steal' from C++ what they've done correct? I sometimes use the following
little helper class for the purpose of 'bundling' more than one value:

public class Pair<T, U> {
 
    public final T t;
    public final U u;
 
    public Pair(T t, U u) {
 
        this.t= t;
        this.u= u;
    }
}
 

We could discuss whether or not both elements should be final; I think they
should be final.

kind regards,

Jos

[java2986]

i use something like this:

public static Object[] wharever() {
        Object object[] = new Object[3];
        int x = 0;
        String y = "0";
        Boolean z=true;
        object[0] = x;
        object[1] = y;
        object[2]=z;
        return object;
    }
 
    public static void main(String... args) {
        Object object[] = wharever();
        int y = Integer.parseInt( object[1].toString());
        int x =  Integer.parseInt( object[2].toString());
        boolean z=Boolean.parseBoolean(object[3].toString());
    }
 

You can return an Object array and cast to any type you want.

[JosAH]

@java2986
Please compile and run/test your code before you post it; there's an ArrayIndexOutOfBoundsException in your code.

kind regards,

Jos

[java2986]

Sorry i modified the the method but din't do it to the main

public static Object[] wharever() {
Object object[] = new Object[3];
int x = 0;
String y = "1";
Boolean z=true;
object[0] = x;
object[1] = y;
object[2]=z;
return object;
}
 
public static void main(String... args) {
Object object[] = wharever();
int y = Integer.parseInt( object[0].toString());
int x = Integer.parseInt( object[1].toString());
boolean z=Boolean.parseBoolean(object[2].toString());
System.out.println(y);
System.out.println(x);
System.out.println(z);
}
 

i wass accesing the posicion that don't exist (boolean z=Boolean.parseBoolean(object[3].toString());)