SetText Problem...

Question

Hello all! Well i'm trying to make a simple Set comparison applet. My problem is when i try and compile my script it gives me this error....
C:\.....\SetApplet.java:212: cannot resolve symbol
symbol : method setText (boolean)
location: class java.awt.TextField
          answerField.setText(set1.equals(set2));
So here is my code for the SetApllet....
import java.io.*;
import java.applet.Applet;
import java.applet.*;
import java.awt.event.*;
import java.awt.*;
import java.util.Enumeration;
import java.util.Vector;
import java.lang.*;
public class SetApplet extends Applet implements ActionListener, ItemListener {
private Set set1;
private Set set2;
private Set resultSet;
private Set activeSet; // reference to the currently selected Set (set1 or set2)
private Checkbox set1Selector;
private Checkbox set2Selector;
private CheckboxGroup selectorGroup;
private List set1List; // list showing elements of set1
private List set2List; // list showing elements of set2
private List resultList; // list showing the elements of a result (of union or intersect) Set
private List activeList; // reference to the currently selected List (set1List or set2List)
private Button addButton;
private TextField value, answerField;
private Button intersectButton, complementButton, unionButton, clearButton, equalsButton;
     private Color background, blue, yellow;
     private Panel row0, row1, row2, row3, row4, row5, row6;
     private     Label headerLabel, label1, label2, label3, label4, label5, label6;
     private String subset1, subset2, subsetadd;
public SetApplet() {
     * makePanel is a method that sets the layout and background color of each panel it is called to create.
     * @param lm Set's Layout
     * @param c Set's Background Color of Panel
     * @return returns new button
     private Panel makePanel(LayoutManager lm, Color c) {
          Panel p = new Panel();
          p.setLayout(lm);
          p.setBackground(c);
          return p;
     * makeButton is a method that sets the label and color of each new button that is created.
     * @param label string label to be used on the new button
     * @param color color of the new button
     * @return returns new button
     private Button makeButton(String label, Color color) {
          Button x = new Button(label);
          x.setBackground(color);
          x.setFont(new Font("Verdana", Font.BOLD, 14));
          return x;
* Initialize the Applet
public void init() {
     //--- create Model
     set1 = new Set();
     set2 = new Set();
     //--- create GUI
     background = new Color(54,140,203);
                    //blue = new Color(129,129,218);
                    blue = new Color(54,140,203);
                    yellow = new Color(255,255,102);
     this.setLayout(new FlowLayout(FlowLayout.CENTER,4,1));
     // Checkboxes
     headerLabel = new Label("Choose the set you want to add or clear: ");
     set1Selector = new Checkbox("Set 1");
     set2Selector = new Checkbox("Set 2");
     row0 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     row0.add(headerLabel);
     row0.add(set1Selector);
     row0.add(set2Selector);
     // Lists
     row1 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     set1List = new List();
     set2List = new List();
     resultList = new List();
     row1.add(new Label("Set 1"));
     row1.add(set1List);
     row1.add(new Label("Set 2"));
     row1.add(set2List);
     row1.add(new Label("Result"));
     row1.add(resultList);
     row2 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     addButton = new Button("Add:");
     value = new TextField(5);
     clearButton = new Button("Clear");
     label1 = new Label("Enter an Integer in the text field and press [Add] to add to indicated set: ");
     row2.add(label1);
     row2.add(addButton);
     row2.add(value);
     row3 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     label2 = new Label("Press this button to clear sets: ");
     row3.add(label2);
     row3.add(clearButton);
     // Buttons
     row4 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     label3 = new Label("Set 1");
     label4 = new Label(" Set 2");
     unionButton = new Button("Union");
     intersectButton = new Button("Intersect");
     complementButton = new Button("Complement");
     row4.add(label3);
     row4.add(unionButton);
     row4.add(intersectButton);
     row4.add(complementButton);
     row4.add(label4);
     //tests
     row5 = makePanel(new FlowLayout(FlowLayout.LEFT,4,2),background);
     label5 = new Label("Test");
     equalsButton = new Button("Equals");
     answerField = new TextField(5);
     row5.add(label5);
     row5.add(equalsButton);
     row5.add(answerField);
     //--- group Checkboxes
     selectorGroup = new CheckboxGroup();
     set1Selector.setCheckboxGroup(selectorGroup);
     set2Selector.setCheckboxGroup(selectorGroup);
     //--- initialize GUI
     selectorGroup.setSelectedCheckbox(set1Selector);
     setActive();
     //--- register Listeners
     set1Selector.addItemListener(this);
     set2Selector.addItemListener(this);
     addButton.addActionListener(this);
     clearButton.addActionListener(this);
     unionButton.addActionListener(this);
     intersectButton.addActionListener(this);
     complementButton.addActionListener(this);
     equalsButton.addActionListener(this);
add(row0);
add(row1);
add(row2);
add(row3);
add(row4);
add(row5);
public void paint(Graphics g) {
               setSize(row1.getSize().width,200);
               validate();
//--- implement ActionListener
* This method is called when one of the Buttons is pushed
public void actionPerformed(ActionEvent ev) {
     Object eventSource = ev.getSource();
     if (eventSource==addButton) {
     // add
     int i = Integer.parseInt(value.getText());
     activeSet.addElement(new Integer(i));
     updateList(activeList, activeSet);
     } else if (eventSource==clearButton) {
     // clear
     activeSet.removeAllElements();
     updateList(activeList, activeSet);
     } else if (eventSource==unionButton) {
     // union
     resultSet = set1.union(set2);
     updateList(resultList, resultSet);
     } else if (eventSource==intersectButton) {
     // intersect
     resultSet = set1.intersection(set2);
     updateList(resultList, resultSet);
     } else if (eventSource==complementButton) {
          // complement
          resultSet = set1.complementWithRespectTo(set2);
          updateList(resultList, resultSet);
     } else if (eventSource==equalsButton) {
          // equals
          answerField.setText(set1.equals(set2));
//--- implement ItemListener
* This method is called, when one of the Checkboxes is selected
public void itemStateChanged(ItemEvent ev) {
     setActive();
//--- private worker methods
* Set activeList and activeSet depending on the selected Checkbox
private void setActive() {
     List newActiveList;
     if (selectorGroup.getSelectedCheckbox()==set1Selector) {
     activeList = set1List;
     activeSet = set1;
     } else {
     activeList = set2List;
     activeSet = set2;
* Set the contents of the List according to the contents of the Set
private void updateList(List list, Set set) {
     if (list.getItemCount() != 0) {
     list.removeAll();
     //--- enumerate loop pattern
     Enumeration en = set.elements();
     while (en.hasMoreElements()) {
     // get next
     Integer i = (Integer)en.nextElement();
     // process
     list.add(i.toString());
Here is my code for my set.java, the equals method is at the bottom.....
import java.io.*;
import java.util.*;
import java.lang.*;
class Set {
     public Set() {
          vector = new Vector();
     public boolean isEmpty() {
          return vector.isEmpty();
     public int size() {
          return vector.size();
     public boolean contains(Object o) {
          Enumeration enum = vector.elements();
          while (enum.hasMoreElements()) {
               Object elem = enum.nextElement();
               if (elem.equals(o))
                    return true;
          return false;
     public void addElement(Object o) {
          if (!contains(o))
               vector.addElement(o);
     public Object copy() {
          Set destSet = new Set();
          Enumeration enum = vector.elements();
          while (enum.hasMoreElements())
               destSet.addElement(enum.nextElement());
          return destSet;
     public Set union(Set s) {
          Set unionSet = (Set)s.copy();
          Enumeration enum = vector.elements();
          while (enum.hasMoreElements())
               unionSet.addElement(enum.nextElement());
          return unionSet;
     public Set intersection(Set s) {
          Set interSet = new Set();
          Enumeration enum = this.vector.elements();
          while (enum.hasMoreElements()) {
               Object elem = enum.nextElement();
               if (s.contains(elem))
                    interSet.addElement(elem);
          return interSet;
     void removeAllElements() {
     vector.removeAllElements();
     Enumeration elements() {
     return vector.elements();
     public void print(PrintStream ps) {
          Enumeration enum = vector.elements();
          while (enum.hasMoreElements()) {
               ps.print(enum.nextElement().toString());
               ps.print(" ");
     //newstuff
     public Set complementWithRespectTo(Set s) {
     // Returns a set containing all elements in s not in the receiver object
     Set complement = new Set();
          Enumeration enum = this.vector.elements();
          while (enum.hasMoreElements()) {
               Object elem = enum.nextElement();
               if (!s.contains(elem))
               complement.addElement(elem);
          return complement;
     public boolean equals(Object right){
     // Returns true if each of the receiver object and s is a subset of
     // the other, and false otherwise
          Enumeration enum = vector.elements();
          while (enum.hasMoreElements()) {
               Object elem = enum.nextElement();
               if (elem.equals(right))
                    return true;
          return false;
Vector vector;
Any thoughts? THANKS ALOT!
I LOVE THIS FORUM!
Paul

Answer 1

Hi
The argument from method setText must to be a string!
One solution:
answerField.setText( (set1.equals(set2) ? "TRUE" : "FALSE") );
Next time post a snippet and explain error not the full source code since most people hate to read long posts and reject the answer.
Regards.