switch

Hello to everybody i ve this code:

Code:

---

switch(i){
       
            case 0:
            {
                vuthoskopisi="kulo";
                tonometrisi=10;
                automati_perimetria=2;
                gwnioskopia=2;
               
                illness = Asth[0];
            break;
            }
            case 1:
            {
                vuthoskopisi="kurto";
                tonometrisi=10;
                automati_perimetria=2;
                gwnioskopia=2;
               
                illness= Asth[1];
            break; 
            }
}

---

i want the variables tonometrisi automati_perimetria and gwnioskopia to be statement like
(tonometrisi<10)&(tonometrisi>0)ect.
When i put this statement in case the compiler saint that this sentence is not a statement.So what s the problem??:cool:

Its exactly as the compiler says, your code isn't a statment :)

You need it to do something with the two values, you can't simply state

Code:

---

(tonometrisi<10)&(tonometrisi>0)

---

For example, it could be used in the if statement like this

Code:

---

if ((tonometrisi<10) && (tonometrisi>0)){
  //do something
}

---

Also, if you're planning to use the switch statement to select based on expressions i don't think it will work how you want.
Type "select case java" into google and check out the first link, it shows you how switches work :)

You may want to consider using else if

Code:

---

if (val1 < val2) {
    //do something
}else if (val1 = val2){
    //do something else
}else if (val1 > val2){
    //do something else
}

---

Quote:

---

Originally Posted by dj kourampies

i want the variables tonometrisi automati_perimetria and gwnioskopia to be statement like
(tonometrisi<10)&(tonometrisi>0)ect.
When i put this statement in case the compiler saint that this sentence is not a statement.So what s the problem??:cool:

---

Can you show what's the exact statement you have added in your code?

This is the class named iatreio(means surgery) i have variables kinds of checkup and in the method diagnwsi i want according to the ammount of the variables
to have as return string the name of illness(the variables is in greek).

Code:

---


/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package ofthalmiatreio;
import java.io.*;

/**
 *
 * @author kris
 */
public class iatreio {
   
    private String vuthoskopisi;
    private int tonometrisi;
    private int automati_perimetria;
    private int gwnioskopia;
   
    private String [] Astheneia;
   
    public iatreio(){
   
      vuthoskopisi="null";
      tonometrisi=0;
      automati_perimetria=0;
      gwnioskopia=0;
      String [] Astheneia={"null"};
    }
    public iatreio(String vuth, int ton, int per, int gwn,  String [] asth){
   
        this.vuthoskopisi=vuth;
        this.tonometrisi=ton;
        this.automati_perimetria=per;
        this.gwnioskopia=gwn;
        this.Astheneia=asth;
    }
    public void setVuthoskopisi(String vuth){
   
        this.vuthoskopisi=vuth;
    }
    public String getVuthoskopisi(){
   
        return vuthoskopisi;
    }
    public void setTonometrisi(int ton){
   
        this.tonometrisi=ton;
    }
    public int getTonometrisi(){
   
        return tonometrisi;
    }
    public void setAutomatiPerimetria(int per){
   
        this.automati_perimetria=per;
    }
    public int getAutomatiPerimetria(){
   
        return automati_perimetria;
    }
    public void setGwnioskopia(int gwn){
   
        this.gwnioskopia=gwn;
    }
    public int getGwnioskopia(){
   
        return gwnioskopia;
    }
    public void  SetAstheneia(String [] asth){
   
        this.Astheneia=asth;
    }

    public String diagnwsi(String vuth, int ton, int aut, int gwn) throws IOException{
   
     
        this.vuthoskopisi=vuth;
        this.tonometrisi=ton;
        this.automati_perimetria=aut;
        this.gwnioskopia=gwn;
       
        String [] Asth={"mywpia", "upermetrwpia","glaukwma","katarraktis","ogkos","epipefykitida"};
        String illness="den exeis apolutws tipota";
        int j;
       
        int i;
      for( i=0;i<6;i++){
         
        switch(i){
       
            case 0:
            {
                vuthoskopisi="kulo";
                tonometrisi=10;
                automati_perimetria=2;
                gwnioskopia=2;
               
                illness = Asth[0];
            break;
            }
            case 1:
            {
                vuthoskopisi="kurto";
                tonometrisi=10;
                automati_perimetria=2;
                gwnioskopia=2;
               
                illness= Asth[1];
            break; 
            }
            case 2:
            {
                vuthoskopisi="kulo";
                tonometrisi=20;
                automati_perimetria=4;
                gwnioskopia=4;
               
                illness= Asth[2];
            break; 
            }
            case 3:
            {
                vuthoskopisi="kurto";
                tonometrisi=20;
                automati_perimetria=4;
                gwnioskopia=4;
               
                illness=Asth[3];
            break; 
            }
            case 4:
            {
                vuthoskopisi="kulo";
                tonometrisi=40;
                automati_perimetria=10;
                gwnioskopia=8;
               
                illness=Asth[4];
            break; 
            }
            case 5:
            {
                vuthoskopisi="kurto";
                tonometrisi=40;
                automati_perimetria=10;
                gwnioskopia=8;
               
                illness=Asth[5];
            break; 
            }
        }
      }
        System.out.println("To apotelesma tis exetasis einai: "+illness);
       
        return illness;
    }
    public static void main(String [] atgs)throws IOException{
   
        iatreio a=new iatreio();
        a.diagnwsi("kurto",40,10,6);
       
    }
}

---

i cant do what i want with if because i cant put 2 boolean expressions inside if.:(

Quote:

---

...i cant put 2 boolean expressions inside if.

---

I don't understand you're problem. I thought you wanted what VeasMKII posted:

Code:

---

if ((tonometrisi<10) && (tonometrisi>0)){
  //do something
}

---

The above will be true if the tonometrisi variable is between 1-9. Do you need something else?

Luck,
CJSL

Quote:

---

(tonometrisi<10)&(tonometrisi>0)

---

you need an extra &. so its &&

VeasMKII posted the code for you already. check it out.

ok i want tonometrisi, gwnioskopia, automati_perimetria to be statement for example {(tonometrisi<10)&&(tonometrisi>0)} &&{(gwnioskopia<5)&&(gwnioskopia>0)}&&{(automati_p erimetria<10)&&(automati_perimetria>0)}. When i use more tha one boolean expressions in if it doesnt work.

If you want to chain that many ANDs it shouldn't be a problem, but you need to remove those closing bracers and surround the statment with a final container:

Code:

---

if ((tonometrisi<10) && (tonometrisi>0) &&
        (gwnioskopia<5) && (gwnioskopia>0) &&
        (automati_p erimetria<10) && (automati_perimetria>0))
{
    //code here
}

---

ok thank tou guys it work.:)

ok i find another one problem with if. I want to put inside if another one expression (String vuthoskopisi="Kulo") or ( String vuthoskopisi="kurto") when i put this expression inside if with the others tonometrisi gwnioskopia it said : operator && cannot applied to java.lang.String.boolean

Please post the code you are woriking with. Are you trying to compare two strings? Are you trying to assign a value to a string?

CJSL

I want to have 4 boolean expressions(4 variables) inside if. My variables is String vuthoskopisi it takes 2 rates "kulo"and "kurto"
, int tonometrisi from 0to10 in the first if in the second(else if ) it takes rates from 10to20 and tin 3rd from 20to 30 ect. Also the variables gwnioskopia and automati_perimetria take rates from xto y in every if .

Is this what you what to do?

Code:

---

if ((tonometrisi<10) && (tonometrisi>0) &&
        (gwnioskopia<5) && (gwnioskopia>0) &&
        (automati_p erimetria<10) && (automati_perimetria>0))
{
  vuthoskopisi="kulo";
  tonometrisi=10;
  automati_perimetria=2;
  gwnioskopia=2;
  illness = Asth[0];
}

---

I suggest you look at the following link about the "if" statement or post the code you are trying to make work:
The if-then and if-then-else Statements (The Java™ Tutorials > Learning the Java Language > Language Basics)

Luck,
CJSL

inside the first if statements i want to put the variable vuthoskopisi which has two cases the first is "kulo"and the second is "kurto" not in then statements.

this is the code:

[CODE]

public String diagnwsi(String vuth, int ton, int aut, int gwn) throws IOException{


this.vuthoskopisi=vuth;
this.tonometrisi=ton;
this.automati_perimetria=aut;
this.gwnioskopia=gwn;

String [] Asth={"mywpia", "upermetrwpia","glaukwma","katarraktis","ogkos","e pipefykitida"};
String illness="dn exeis tipota";


if (
(vuthoskopisi="kulo") &&
(tonometrisi<=10) && (tonometrisi>=0) &&
(gwnioskopia<=5) && (gwnioskopia>=0) &&
(automati_perimetria<=10) && (automati_perimetria>=0))

{
illness=Asth[0];
}
else if (
(vuthoskopisi="kulo") &&
(tonometrisi<=20) && (tonometrisi>10) &&
(gwnioskopia<=10) && (gwnioskopia>5) &&
(automati_perimetria<=20) && (automati_perimetria>10))
{
illness=Asth[1];
}
else if (
(vuthoskopisi="kulo") &&
(tonometrisi<10) && (tonometrisi>0) &&
(gwnioskopia<=15) && (gwnioskopia>10) &&
(automati_perimetria<=30) && (automati_perimetria>20))
{
illness=Asth[2];
}

else if (
(vuthoskopisi="kurto") &&
(tonometrisi<=10) && (tonometrisi>=0) &&
(gwnioskopia<=5) && (gwnioskopia>=0) &&
(automati_perimetria<=10) && (automati_perimetria>=0))

{
illness=Asth[3];
}
else if (
(vuthoskopisi="kurto") &&
(tonometrisi<=20) && (tonometrisi>10) &&
(gwnioskopia<=10) && (gwnioskopia>5) &&
(automati_perimetria<=20) && (automati_perimetria>10))
{
illness=Asth[4];
}
else if (
(vuthoskopisi="kurto") &&
(tonometrisi<10) && (tonometrisi>0) &&
(gwnioskopia<=15) && (gwnioskopia>10) &&
(automati_perimetria<=30) && (automati_perimetria>20))
{
illness=Asth[5];
}
System.out.println("To apotelesma einai:" +illness);
return illness;
}
[\CODE]

OK, you want to compare string variable (you can't assign variables in the if statement). When you compare strings, you have to use the equals() method:

Code:

---

if (
(vuthoskopisi.[COLOR="blue"][B]equals("kulo") [/B][/COLOR]&&
(tonometrisi<=10) && (tonometrisi>=0) &&
(gwnioskopia<=5) && (gwnioskopia>=0) &&
(automati_perimetria<=10) && (automati_perimetria>=0))

{
illness=Asth[0];
}
else if (
(vuthoskopisi[B][COLOR="blue"].equals("kulo")[/COLOR][/B] &&
(tonometrisi<=20) && (tonometrisi>10) &&
(gwnioskopia<=10) && (gwnioskopia>5) &&
(automati_perimetria<=20) && (automati_perimetria>10))
{
illness=Asth[1];
}
.
.
.

---

Luck,
CJSL

ok this is exactly what i want thank you very much.:)