<h:form>
    <h:panelGrid columns="#{bean.numberCount}">
        <c:forEach var="num" items="#{bean.numberList}">
            #{number}
        </c:forEach>
    </h:panelGrid>
</h:form>

private List<List<Float>> _Matrix;

public List<List<Float>> get_Matrix() {
    return this._Matrix;
}

/**
 * Constructor for BackingBean.
 */
public BackingBean() {
    this._Matrix = new ArrayList<List<Float>>();
    this._Matrix.add(new ArrayList<Float>());
    this._Matrix.add(new ArrayList<Float>());
    this._Matrix.get(0).add(1.0f);
    this._Matrix.get(0).add(2.0f);
    this._Matrix.get(0).add(3.0f);
    this._Matrix.get(1).add(1.0f);
    this._Matrix.get(1).add(2.0f);
    this._Matrix.get(1).add(3.0f);
}

<h:panelGrid columns="#{backingBean._ColumnNumber}">
        <c:forEach var="row" items="#{backingBean._Matrix}">

            <c:forEach var="value" items="#{row}">

                #{value}
                    </c:forEach>
        </c:forEach>
    </h:panelGrid>

<c:forEach var="value" items="#{row}">

            #{value}
                </c:forEach>
    </c:forEach>
</h:panelGrid>