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Bug
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Resolution: Not an Issue
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P3
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7, 8, 9
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generic
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generic
FULL PRODUCT VERSION :
A DESCRIPTION OF THE PROBLEM :
Filling a JTextPane with HTMLEditorKit with simple HTML Elements and removing them at the same time keeps the app growing memory and becoming bigger and bigger.
http://i.imgur.com/pOgvAH4.png
REGRESSION. Last worked in version 8u141
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication26;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultCaret;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;
public class NewJFrame extends javax.swing.JFrame {
private long globalCount = 0;
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
this.setSize(500, 200);
this.setLocationRelativeTo(null);
HTMLEditorKit editorKit = new HTMLEditorKit();
this.jTextPane1.setEditorKit(editorKit);
this.jTextPane1.setContentType("text/html");
//
StyleSheet styleSheet = editorKit.getStyleSheet();
styleSheet.addRule("body {color:#000; font-family:times; margin: 4px; }");
styleSheet.addRule("h1 {color: blue;}");
styleSheet.addRule("h2 {color: #ff0000;}");
styleSheet.addRule("div {font : 10px monaco; color : black; background-color : #fafafa; }");
//
this.jTextPane1.setText("<html><body><div id=\"GLOBALDIV\"></div></body></html>");
this.jScrollPane1.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
this.jScrollPane1.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
DefaultCaret caret = (DefaultCaret) this.jTextPane1.getCaret();
caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
this.jScrollPane1.setAutoscrolls(false);
this.jTextPane1.setAutoscrolls(false);
Thread fillThread = new Thread() {
@Override
public void run() {
while (!interrupted()) {
try {
removeFromPane(jTextPane1);
insertHTMLToPane(jTextPane1);
Thread.sleep(1);
} catch (InterruptedException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
break;
}
}
}
};
fillThread.start();
}
private void removeFromPane(JTextPane pane) {
HTMLDocument doc = (HTMLDocument) pane.getDocument();
Element element = doc.getElement("ID" + (this.globalCount - 10));
if (element != null) {
doc.removeElement(element);
}
}
private void insertHTMLToPane(JTextPane pane) {
this.globalCount++;
HTMLDocument doc = (HTMLDocument) pane.getDocument();
Element element = doc.getElement("GLOBALDIV");
if (element != null) {
try {
doc.insertBeforeEnd(element, "<div id=\"ID"+this.globalCount+"\">" + "<div> " + this.globalCount + " </div>" + "</div>");
} catch (BadLocationException | IOException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(new java.awt.BorderLayout());
jScrollPane1.setViewportView(jTextPane1);
jPanel1.add(jScrollPane1, java.awt.BorderLayout.CENTER);
getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}
---------- END SOURCE ----------
A DESCRIPTION OF THE PROBLEM :
Filling a JTextPane with HTMLEditorKit with simple HTML Elements and removing them at the same time keeps the app growing memory and becoming bigger and bigger.
http://i.imgur.com/pOgvAH4.png
REGRESSION. Last worked in version 8u141
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication26;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultCaret;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;
public class NewJFrame extends javax.swing.JFrame {
private long globalCount = 0;
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
this.setSize(500, 200);
this.setLocationRelativeTo(null);
HTMLEditorKit editorKit = new HTMLEditorKit();
this.jTextPane1.setEditorKit(editorKit);
this.jTextPane1.setContentType("text/html");
//
StyleSheet styleSheet = editorKit.getStyleSheet();
styleSheet.addRule("body {color:#000; font-family:times; margin: 4px; }");
styleSheet.addRule("h1 {color: blue;}");
styleSheet.addRule("h2 {color: #ff0000;}");
styleSheet.addRule("div {font : 10px monaco; color : black; background-color : #fafafa; }");
//
this.jTextPane1.setText("<html><body><div id=\"GLOBALDIV\"></div></body></html>");
this.jScrollPane1.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
this.jScrollPane1.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
DefaultCaret caret = (DefaultCaret) this.jTextPane1.getCaret();
caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
this.jScrollPane1.setAutoscrolls(false);
this.jTextPane1.setAutoscrolls(false);
Thread fillThread = new Thread() {
@Override
public void run() {
while (!interrupted()) {
try {
removeFromPane(jTextPane1);
insertHTMLToPane(jTextPane1);
Thread.sleep(1);
} catch (InterruptedException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
break;
}
}
}
};
fillThread.start();
}
private void removeFromPane(JTextPane pane) {
HTMLDocument doc = (HTMLDocument) pane.getDocument();
Element element = doc.getElement("ID" + (this.globalCount - 10));
if (element != null) {
doc.removeElement(element);
}
}
private void insertHTMLToPane(JTextPane pane) {
this.globalCount++;
HTMLDocument doc = (HTMLDocument) pane.getDocument();
Element element = doc.getElement("GLOBALDIV");
if (element != null) {
try {
doc.insertBeforeEnd(element, "<div id=\"ID"+this.globalCount+"\">" + "<div> " + this.globalCount + " </div>" + "</div>");
} catch (BadLocationException | IOException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(new java.awt.BorderLayout());
jScrollPane1.setViewportView(jTextPane1);
jPanel1.add(jScrollPane1, java.awt.BorderLayout.CENTER);
getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}
---------- END SOURCE ----------
