Passing variable to another class Java

Orihime_Orion :

I need to pass the boolean value processed in class Buffer to class Reader. The following are the classes:

public class Buffer {

    public int read(int j) {
      (if condition) {
         setBool(true);
      }
      (else if condition) {
         setBool(false);
      }
       else
         setBool(true);
       return 0;
    }

    public boolean setBool(boolean value) {
        boolean val = value;
        return val;
    }
}

public class Reader implements Runnable{
    Buffer buffer;

    public Reader(Buffer buffer){
        this.buffer = buffer;
    }

    public synchronized void run() {
        int j=0;
        int k=0;
        while (k!=18)
           buffer.read(j);
           j++;
           k++;
    }
}

I tried creating another method in the class Buffer which will be called by the class Reader as shown below,

public class Buffer {
   private static boolean value; 

   public int read(int j) { ..... }
   public boolean setBool(boolean value { ....} 

   public boolean getBool() {
      boolean val = setBool(value);
      return val;
   }
}

public class Reader {
    Buffer buffer;

    public Reader(Buffer buffer){...}

    public synchronized void run() {
        int j=0;
        int k=0;
        while (k!=18)
           buffer.read(j);
           j++;
           k++;
          boolean value = getBool();
    }
}

however when I displayed the value of method setBool to check it displays both true and false. I am unsure as to how I should proceed.

azro :

You may use value as an attribute of Buffer, you'll have it's setter and getter,
also it seems that putting the second condition as first, allow you to remove one branch
also you need to return an int from read(j) actually it returns nothing

class Buffer {
    private boolean value;

    public int read(int j) {
        if (condition2) {
            this.value = false;
        } else {
            this.value = true;
        }
        return 0; 
    }

    public boolean isValue() {
        return value;
    }

    public void setValue(boolean value) {
        this.value = value;
    }
}

And so

class Reader implements Runnable {
    Buffer buffer;

    public Reader(Buffer buffer) {
        this.buffer = buffer;
    }

    @Override
    public synchronized void run() {
        int j = 0;
        int k = 0;
        while (k != 18) {
            buffer.read(j);
            j++;
            k++;
            boolean v = buffer.isValue();
        }
    }
}