Question

import java.lang.*;

public class GrammerStack extends GrammerStructure implements StringStack { 
 private String structName; 
 private int cap;

public GrammerStack(String structureName, int limit){ 
 this.structName = structureName; 
 this.cap = limit; 
 System.out.println(structName+"["+cap+"]");
} 
public void GrammerStructure(String structureName){ 
 this.structName = structureName; 
}

//Empty overrides. 
public String[] asArray(){}; 
public String push(String item) throws FillException{}; 
public String pop() throws EmptyException{}; 
public boolean contains(String query){}; 
public void empty(){}; 
public double fillPercent(){};

public String getName(){ return structName; }

public void main(String args[]){ 
 GrammerStack("Stack1",3); 
}

}

When I run: javac GrammerStack.java
I get the following:

GrammerStack.java:15: cannot find symbol
symbol  : constructor GrammerStructure()
location: class GrammerStructure
   public GrammerStack(String structureName, int limit){
                                                                                                  ^
GrammerStack.java:41: cannot find symbol
symbol  : method GrammerStack(java.lang.String,int)
location: class GrammerStack
       GrammerStack("Stack1",3);
       ^
2 errors

I can’t figure out what is going wrong here, my method is not mismatched to the name of the file, either. “Grammer” is correct in this case.

Any help?

Answer 1

For first problem, add super(structureName); as first line in constructor. I assume you have public GrammerStructure(String name) constructor defined in super class. If this is not the case, please share your constructor.

public GrammerStack(String structureName, int limit){
  super(structureName);
  this.structName = structureName; 
  this.cap = limit; 
  System.out.println(structName+"["+cap+"]");
}

For second problem, you are missing the keyword new. Change below:

public void main(String args[]){ 
          GrammerStack("Stack1",3); 
 }

with

 public void main(String args[]){ 
     new GrammerStack("Stack1",3); 
 }

or

 public void main(String args[]){ 
   GrammerStack grammerStack = new GrammerStack("Stack1",3); 
 }