Thread: Help me with my code

I'm new to java programming and this is my assignment. This is the code I've done but couldn't able to display the error message . When I execute the program I'm only getting the error message "Class room table cannot have irregular-shape table." but was not successful in getting the error message for sides and legs which should obviously be displayed."Error in setting legs . Number of legs cannot be less than 3." "Error in setting sides, number of sides cannot be 0".

Thanks for the help.

//Class ClassRoomTable is to model class room table
 
 
 
 
//Class table is to model table
class Table {
//Error handling class.
//An object of this class is thrown if
//the number of legs for a table is less than 3.
	public class TooFewLegsError extends Exception // -- 2%
	{
		public TooFewLegsError(){
		System.out.println("Error in setting legs . Number of legs cannot be less than 3.");
		}
	}
//An object of this class is thrown if
//the number of sides for a table is 0
	public class ZeroSideError extends Exception // --- 1%
	{
		public ZeroSideError(){
			System.out.println("Error in setting sides, number of sides cannot be 0");
		}
	}
//By default the number of legs for a table is 4, and
//the number of sides for a table is also 4.
	private int legs=0; // number of legs
	private int sides=0; // number of sides
 
//Default constructor of the table class.
//By default the number of legs for a table is 4, and
//the number of sides for a table is also 4.
public Table() // --- 1%
{ 
 
 
}
//A TooFewLegsError is thrown if the number of legs
//for a table is less than 3, or a ZeroSideError is thrown
//if the number of sides for a table is equal to 0
	public Table(int legs1, int sides1) throws TooFewLegsError, ZeroSideError
	//---- 3%
	{ 
		if(legs1==2){
		throw new TooFewLegsError();
		}else if(sides1==0){
		throw new ZeroSideError();
	}
}
//A TooFewLegsError error is thrown if the
//number of legs for a table is less than 3
public void setLegs(int legs1) throws TooFewLegsError // -- 2%
{
if(legs1<3){
throw new TooFewLegsError();
}
}
 
//A ZeroSideError error is thrown if the number
//of sizes for a table is equal to 0
	public void setSides(int sides1) throws ZeroSideError // -- 2%
	{
	if(sides1==0){
	throw new ZeroSideError();
	}
	}
 
}
public class ClassRoomTable extends Table 
{
//Error handling class.
//An object of this class is thrown if
//the shape of a classroom table is irregular.
	public class IrregularShapeError extends Exception {
		public IrregularShapeError() {
			System.out.println("Class room table cannot have irregular-shape table.");;
 
		}
 
	}
private int shape=1; // 1: rectangular
//2: circle
//3: triangle
//4: irregular
//An error is thrown if the shape is irregular
public ClassRoomTable(int shape1) throws IrregularShapeError
{ // -- 2%
 
if(shape1==4){
throw new IrregularShapeError();
}
 
}
 
//An error is thrown if the shape is irregular
public void setShape(int shape1) throws IrregularShapeError
{ // -- 2%
if(shape1==4){
throw new IrregularShapeError();
}
 
}
 
public static void main(String argv[]) {
try {
ClassRoomTable p = new ClassRoomTable(2);
 
p.setShape(4);
p.setSides(0); // This line will cause an exception
p.setLegs(2); // This line will not be executed.
}
catch (ClassRoomTable.IrregularShapeError n) {
System.out.println(
"Class room table cannot have irregular-shape table."); 
}
catch (Table.TooFewLegsError n) {
System.out.println("Error in setting legs . Number of legs cannot be less than 3.");
}
catch (Table.ZeroSideError n) {
System.out.println(
"Error in setting sides, number of sides cannot be 0"); 
}
}
}