What java modifier let's me use a boolean in any class and method -

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I have a boolean bigger and lower middle class, I class wants to use it, as well as class b. If I try to put the boolean in the classroom then it gets stagnant and fails. Can anyone tell me what should I do? I do not know which essence is there.

I'm not sure what you mean by "changes" to stabilize, but if If you want to reach the value of any frequency variable from another class, then you should declare it personal and make an accelerator method for it. Looking at your example: 

  public class ClassB {private bullion is large, medium, small; public boolean is big () {return big;} public bullie Not Small () {return small;} public boolean Hamidiam () {return through;}}

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