java - toString and booleans -


this question has answer here:

i making class lightbulb , have have on/off state whether it's burntout or not, , color. whatever reason right things switch but, tostring prints wrong answer , cannot figure out why. not used working booleans , code may not support logic. can help?

here code:

public class light {  // variables initialized in light constructors.   private boolean on;  private boolean burntout;  private string color = "";   // default constructor sets bulb on, not burnt out, , "white".   public light()  {   on= true;   burntout = false;   color = "white";  }   // constructor sets variable "on" parameter o. burntout  // variable set parameter b. if burntout  // true, on set false, no matter value stored in o.  // color variable set parameter c if c "red", "green"  // or "blue". constructor ignores case of value in c. if c holds  // value other "red", "green" or "blue", constructor sets  // color "white".   public light(boolean o, boolean b, string c)  { on = o; burntout=b;   if(burntout=true){     on = false;   }   else{     on= o;   }   if(c.equalsignorecase("red")){     color = "red";    }   if(c.equalsignorecase("blue")){     color = "blue";   }   if (c.equalsignorecase("green")){     color="green";   }   else {     color = "white";   }   }   // tostring method returns string light in format:  // off red    burnt out  // on green    not burnt out  //  // notice there 1 space between "off"/"on" , value color,  // , tab before "burnt out" or "not burnt out".   public string tostring()  {   string x ="";        if(on = true){          x+="on" + " ";        }        if(on = false){          x+= "off" + " ";        }         x+= color;         if (burntout = false){          x+="\t" + "not burnt out";        }        if(burntout = true){          x+= "\t" + "burnt out";        }     return x;  }

and here test project allowing me run show results:

> run light

1. test light() * pass: on set correctly (true) pass: burntout set correctly (false) pass: color set correctly (white) * fail: tostring not work expected (on white burnt out)

  1. test light(boolean b, boolean o, string c) * pass: on set correctly (false) pass: burntout set correctly (true) pass: color set correctly (green) * fail: tostring not work expected (on green burnt out)

this:

if(on = true){

you're not comparing, you're assigning value. compare, use ==:

if(on == true){

or, simpler:

if(on){

(note: there several places in code have error. illustrating 1 of them. fix others accordingly well.)


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