请 问 如 何 改 变 TextArea 中 的 text 的 颜色?

Question

textArea.setForeground(Color c);随便设置什么着色了，只要构造出一个Color对象了，Color还有很多常量可以使用。

Answer 1

textArea中有很多文字,但是这些文字要设置成不同的颜色啊,然后显示在一个TextArea啊!
不能只有一种颜色的

Answer 2

textArea.setBackguand(Color.green);
这样!

Answer 3

不是设置色.
是设置不同的文字颜色.有谁知道Highlighter这个对象怎么用吗????

Answer 4

TextArea只能有种色，象记事本一样的要有不同的设置，可以用JEditorPane或JTextPane

Answer 5

哦,JEditorPane和JTextPane怎么用啊?
谢谢!!!!!!!!!!!!!11

Answer 6

这是别人写的一个例子，刚好我也再做这方面的东西，帮你贴上，你看看：
package robocode.editor; 
import java.awt.*;
import java.io.*;
import java.util.StringTokenizer;
import javax.swing.*;
import javax.swing.event.*; 
public class FrameTest extends JFrame
       implements CaretListener{    JScrollPane jScrollPane1 = new JScrollPane();
   JEditorPane editorPane = null;
   RobocodeEditorKit editorKit;
   public FrameTest() {
       try {
           jbInit();
       }
       catch(Exception e) {
           e.printStackTrace();
       }
   }
   public static void main(String[] args) {
       FrameTest frameTest1 = new FrameTest();
       frameTest1.setSize(400,300);
       frameTest1.setVisible(true);
   }
   private void jbInit() throws Exception {
       editorPane = new JEditorPane();
       editorPane.setText("jEditorPane1");
       this.getContentPane().add(jScrollPane1, BorderLayout.CENTER);
       jScrollPane1.getViewport().add(editorPane, null);        try
       {
           editorPane.setCaretColor(Color.black);
           editorPane.setSelectionColor(new Color(8,36,107));
           editorPane.setName("editorPane");
           editorPane.setFont(new Font("monospaced", 0, 12));
           editorPane.setContentType("text/java");
           editorKit = new RobocodeEditorKit();
           editorPane.setEditorKitForContentType("text/java", editorKit);
           editorPane.setContentType("text/java");
           //editorKit.setEditWindow(this);
           editorPane.addCaretListener(this);
       }
       catch(Throwable e)
       {
           e.printStackTrace();
       }
   }    public void caretUpdate(CaretEvent e)
   {
       int lineend = editorPane.getDocument().getDefaultRootElement().getElementIndex(e.getDot());
       //editor.setLineStatus(lineend);
   }
} 

Answer 7

package robocode.editor; import javax.swing.text.*;
//import robocode.util.Utils; // Referenced classes of package robocode.editor:
//            EditWindow public class JavaDocument extends PlainDocument
{    public JavaDocument()
   {
       needsRedraw = false;
       //editWindow = null;
       editing = false;
   }    protected JavaDocument(javax.swing.text.AbstractDocument.Content c)
   {
       super(c);
       needsRedraw = false;
       //editWindow = null;
       editing = false;
   } //    public EditWindow getEditWindow()
//    {
//        return editWindow;
//    }    public void insertString(int offs, String str, AttributeSet a)
       throws BadLocationException
   {
       if(!editing)
       {
           super.insertString(offs, str, a);
           return;
       }
       if(str.equals("}"))
       {
           if(getText(offs - 1, 1).equals("\t"))
           {
               super.remove(offs - 1, 1);
               super.insertString(offs - 1, str, a);
           } else
           {
               super.insertString(offs, str, a);
           }
       } else
       if(str.equals("\n"))
       {
           int elementIndex = getDefaultRootElement().getElementIndex(offs);
           Element element = getDefaultRootElement().getElement(elementIndex);
           int startOffset = element.getStartOffset();
           int endOffset = element.getEndOffset();
           String elementText = null;
           elementText = getText(startOffset, endOffset - startOffset);
           int tabCount;
           for(tabCount = 0; elementText.charAt(tabCount) == '\t'; tabCount++);
           if(elementText.indexOf("{") >= 0)
               tabCount++;
           String tabs = "";
           for(int i = 0; i < tabCount; i++)
               tabs = tabs + "\t";            super.insertString(offs, str + tabs, a);
       } else
       {
           super.insertString(offs, str, a);
       }
   }    protected void insertUpdate(javax.swing.text.AbstractDocument.DefaultDocumentEvent event, AttributeSet attributeSet)
   {
//        if(editWindow != null)
//            editWindow.setModified(true);
       int orgChangedIndex = getDefaultRootElement().getElementIndex(event.getOffset());
       super.insertUpdate(event, attributeSet);
       Element rootElement = getDefaultRootElement();
       javax.swing.event.DocumentEvent.ElementChange deltas = event.getChange(rootElement);
       if(deltas == null)
       {
           Element changedElement = getDefaultRootElement().getElement(orgChangedIndex);
           processMultilineComments(changedElement, false);
       } else
       {
           Element changedElements[] = deltas.getChildrenAdded();
           if(changedElements == null || changedElements.length == 0)
               log("Unknown insert even, 0 children added.");
           for(int i = 0; i < changedElements.length; i++)
               processMultilineComments(changedElements[i], true);        }
   }    public boolean isNeedsRedraw()
   {
       return needsRedraw;
   }    private void log(String s)
   {
       System.out.println(s);
   }    protected void postRemoveUpdate(javax.swing.text.AbstractDocument.DefaultDocumentEvent event)
   {
//        if(editWindow != null)
//            editWindow.setModified(true);
       int orgChangedIndex = getDefaultRootElement().getElementIndex(event.getOffset());
       super.postRemoveUpdate(event);
       Element rootElement = getDefaultRootElement();
       int changedIndex = getDefaultRootElement().getElementIndex(event.getOffset());
       Element changedElement = getDefaultRootElement().getElement(changedIndex);
       javax.swing.event.DocumentEvent.ElementChange deltas = event.getChange(rootElement);
       if(deltas != null)
           processMultilineComments(changedElement, true);
       else
           processMultilineComments(changedElement, false);
   }    public void processMultilineComments(Element element, boolean isDeltas)
   {
       int elementIndex = getDefaultRootElement().getElementIndex(element.getStartOffset());
       int startOffset = element.getStartOffset();
       int endOffset = element.getEndOffset();
       String elementText = null;

Answer 8

try
       {
           elementText = getText(startOffset, endOffset - startOffset);
       }
       catch(BadLocationException e)
       {
           log("Error processing updates: " + e);
       }
       boolean followingLineComment = false;
       boolean previousLineComment = false;
       boolean startsComment = false;
       boolean endsComment = false;
       MutableAttributeSet a = (MutableAttributeSet)element.getAttributes();
       if(a.isDefined("inComment"))
           previousLineComment = true;
       else
       if(isDeltas)
       {
           int lastElementIndex = elementIndex - 1;
           if(lastElementIndex >= 0)
           {
               javax.swing.text.AbstractDocument.AbstractElement lastElement = (javax.swing.text.AbstractDocument.AbstractElement)getDefaultRootElement().getElement(lastElementIndex);
               if(!lastElement.isDefined("endsComment") && lastElement.isDefined("inComment") || lastElement.isDefined("startsComment"))
               {
                   a.addAttribute("inComment", "inComment");
                   previousLineComment = true;
               }
           }
       }
       followingLineComment = previousLineComment;
       int cIndex = elementText.indexOf("//");
       int eIndex;
       int sIndex;
       if(cIndex >= 0)
       {
           eIndex = elementText.lastIndexOf("*/", cIndex);
           sIndex = elementText.lastIndexOf("/*", cIndex);
       } else
       {
           eIndex = elementText.lastIndexOf("*/");
           sIndex = elementText.lastIndexOf("/*");
       }
       if(eIndex > sIndex)
       {
           followingLineComment = false;
           endsComment = true;
           startsComment = false;
       } else
       if(sIndex > eIndex)
       {
           followingLineComment = true;
           startsComment = true;
           endsComment = false;
       }
       if(followingLineComment)
       {
           if(startsComment)
           {
               if(!a.isDefined("startsComment"))
               {
                   a.addAttribute("startsComment", "startsComment");
                   setFollowingLinesCommentFlag(startOffset, true);
               }
           } else
           if(a.isDefined("startsComment"))
               a.removeAttribute("startsComment");
           if(a.isDefined("endsComment"))
           {
               a.removeAttribute("endsComment");
               setFollowingLinesCommentFlag(startOffset, true);
           } else
           if(isDeltas)
               setFollowingLinesCommentFlag(startOffset, true);
       } else
       {
           if(endsComment)
           {
               if(!a.isDefined("endsComment"))
               {
                   a.addAttribute("endsComment", "endsComment");
                   setFollowingLinesCommentFlag(startOffset, false);
               }
           } else
           if(a.isDefined("endsComment"))
               a.removeAttribute("endsComment");
           if(a.isDefined("startsComment"))
           {
               a.removeAttribute("startsComment");
               setFollowingLinesCommentFlag(startOffset, false);
           } else
           if(isDeltas)
               setFollowingLinesCommentFlag(startOffset, false);
       }
   } //    public void setEditWindow(EditWindow newEditWindow)
//    {
//        editWindow = newEditWindow;
//    }    public void setFollowingLinesCommentFlag(int offset, boolean commentFlag)
   {
       int elementIndex = getDefaultRootElement().getElementIndex(offset);
       elementIndex++;
       for(boolean done = false; !done;)
       {
           Element e = getDefaultRootElement().getElement(elementIndex);
           if(e == null)
           {
               done = true;
           } else
           {
               MutableAttributeSet a = (MutableAttributeSet)e.getAttributes();
               if(commentFlag)
               {
                   if(a.isDefined("inComment"))
                   {
                       done = true;
                   } else
                   {
                       a.addAttribute("inComment", "inComment");
                       needsRedraw = true;
                   }
                   if(a.isDefined("endsComment"))
                       done = true;
               } else
               {
                   if(!a.isDefined("inComment"))
                   {
                       done = true;
                   } else
                   {
                       a.removeAttribute("inComment");
                       needsRedraw = true;
                   }
                   if(a.isDefined("startsComment"))
                       done = true;
               }
               elementIndex++;
           }
       }    }    public void setNeedsRedraw(boolean newNeedsRedraw)
   {
       needsRedraw = newNeedsRedraw;
   }    public boolean getEditing()
   {
       return editing;
   }    public void setEditing(boolean editing)
   {
       this.editing = editing;
   }    public boolean needsRedraw;
//    public EditWindow editWindow;
   private boolean editing;
}

Answer 9

何必那么麻烦，如果只是简单的应用，我教你一招---------HTML大法jEditorPane1.setContentType("text/html");
jEditorPane1.setText("<html><body><font color=red>Dekn</font><br><font color=blue>Dekn dekn dekn</font></body></html>");
试试吧，绝对爽