Java jTable单元格背景色
我正试图使用渲染器给jTable的一个单元格上色，但效果不太好，因为它们使表格滞后，无法看到。这是我的密码：Java jTable单元格背景色,java,swing,jtable,background-color,tablecellrenderer,Java,Swing,Jtable,Background Color,Tablecellrenderer,我正试图使用渲染器给jTable的一个单元格上色，但效果不太好，因为它们使表格滞后，无法看到。这是我的密码： TableCellRenderer Tcr = jTable1.getCellRenderer(x, y); Component c = Tcr.getTableCellRendererComponent(jTable1, jTable1.getValueAt(x, y), false, false, x, y);
TableCellRenderer Tcr = jTable1.getCellRenderer(x, y);
Component c = Tcr.getTableCellRendererComponent(jTable1, jTable1.getValueAt(x, y), false, false, x, y);
if(x > 0 && x < (jTable1.getRowCount()-1) && y > 1 && y < (jTable1.getColumnCount()-1)){
if(!jTable1.getValueAt(x, y).equals(null) && !jTable1.getValueAt(x, y).equals("F") && !jTable1.getValueAt(x, y).equals(" ")){
if(!jTable1.getValueAt(x, y).toString().contains("/P") && !jTable1.getValueAt(x, y).toString().equals("P")){
if(Double.parseDouble(jTable1.getValueAt(x, y).toString()) > 24){
setBackground(java.awt.Color.red);
}
}
}
}
/*
* 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 fatturazione;
import ObjectModel.Timesheet;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.table.TableCellRenderer;
/**
*
* @author xtphere
*/
public class Example extends javax.swing.JFrame {
/**
* Creates new form Main
*/
public Example() {
initComponents();
}
/**
* 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() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
CheckButton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
));
jScrollPane1.setViewportView(jTable1);
CheckButton.setText("Check the table");
CheckButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CheckButtonActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 375, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(CheckButton))
.addContainerGap(15, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 275, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(CheckButton)
.addGap(0, 35, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void CheckButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int x, y, i = 1;
for(x = 0; x < jTable1.getRowCount(); x++){
for(y = 0; y < jTable1.getColumnCount(); y++){
TableCellRenderer Tcr = jTable1.getCellRenderer(x, y);
Component c = Tcr.getTableCellRendererComponent(jTable1, jTable1.getValueAt(x, y), false, false, x, y);
if(jTable1.getValueAt(x, y) == null)
{
jTable1.setValueAt("P", x, y);
}
if(jTable1.getValueAt(x, y) != null && !jTable1.getValueAt(x, y).equals("F") && !jTable1.getValueAt(x, y).equals(" ")){
System.out.print(jTable1.getValueAt(x, y)+"\n");
if(!jTable1.getValueAt(x, y).toString().contains("/P") && !jTable1.getValueAt(x, y).toString().equals("P")){
System.out.print("prima del maggiore di 24");
if(Double.parseDouble(jTable1.getValueAt(x, y).toString()) > 24){
System.out.print("leggi il 25, almeno?");
c.setBackground(java.awt.Color.red);
}
}
}
}
}
}
/**
* @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(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Example().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton CheckButton;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
// End of variables declaration
}
/*
*要更改此许可证标题，请在“项目属性”中选择“许可证标题”。
*要更改此模板文件，请选择工具|模板
*然后在编辑器中打开模板。
*/
包装脂肪酰锡；
导入ObjectModel.Timesheet；
导入java.awt.Component；
导入javax.swing.JLabel；
导入javax.swing.table.TableCellRenderer；
/**
*
*@author xtphere
*/
公共类示例扩展了javax.swing.JFrame{
/**
*创建新窗体主窗体
*/
公共示例（）{
初始化组件（）；
}
/**
*从构造函数中调用此方法来初始化表单。
*警告：不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告（“未选中”）
//
私有组件（）{
jScrollPane1=newjavax.swing.JScrollPane（）；
jTable1=newjavax.swing.JTable（）；
CheckButton=newjavax.swing.JButton（）；
setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）；
jTable1.setModel（新的javax.swing.table.DefaultTableModel(
新对象[][]{
{null，null，null，null}，
{null，null，null，null}，
{null，null，null，null}，
{null，null，null，null}
},
新字符串[]{
“标题1”、“标题2”、“标题3”、“标题4”
}
));
jScrollPane1.setViewportView（jTable1）；
CheckButton.setText（“检查表格”）；
CheckButton.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行检查按钮操作（evt）；
}
});
javax.swing.GroupLayout=newjavax.swing.GroupLayout（getContentPane（））；
getContentPane（）.setLayout（布局）；
layout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（layout.createSequentialGroup（）
.addContainerGap（）
.addGroup（layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addComponent（jScrollPane1，javax.swing.GroupLayout.PREFERRED\u SIZE，375，javax.swing.GroupLayout.PREFERRED\u SIZE）
.addComponent（选中按钮））
.addContainerGap（15，简称最大值））
);
layout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（layout.createSequentialGroup（）
.addComponent（jScrollPane1，javax.swing.GroupLayout.PREFERRED_SIZE，275，javax.swing.GroupLayout.PREFERRED_SIZE）
.addPreferredGap（javax.swing.LayoutStyle.ComponentPlacement.UNRELATED）
.addComponent（选中按钮）
.addGap（0,35，短最大值））
);
包装（）；
}//
private void CheckButtonActionPerformed（java.awt.event.ActionEvent evt）{
//TODO在此处添加您的处理代码：
int x，y，i=1；
对于（x=0；x24）{
系统输出打印（“leggi il 25，almeno？”）；
c、 挫折背景（java.awt.Color.red）；
}
}
}
}
}
}
/**
*@param指定命令行参数
*/
公共静态void main（字符串参数[]）{
/*设置Nimbus的外观和感觉*/
//
/*如果Nimbus（在JavaSE6中引入）不可用，请使用默认的外观。
*详情请参阅http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
试一试{
for（javax.swing.UIManager.LookAndFeelInfo:javax.swing.UIManager.getInstalledLookAndFeels（））{
if（“Nimbus”.equals（info.getName（）））{
setLookAndFeel（info.getClassName（））；
打破
}
}
}捕获（ClassNotFoundException ex）{
java.util.logging.Logger.getLogger（例如.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}catch（实例化异常）{
java.util.logging.Logger.getLogger（例如.class.getName（））.log（java.util.logging.Level.SEVERE，
/*
* 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 fatturazione;
import ObjectModel.Timesheet;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.table.TableCellRenderer;
/**
*
* @author xtphere
*/
public class Example extends javax.swing.JFrame {
/**
* Creates new form Main
*/
public Example() {
initComponents();
}
/**
* 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() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
CheckButton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
));
jScrollPane1.setViewportView(jTable1);
CheckButton.setText("Check the table");
CheckButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CheckButtonActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 375, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(CheckButton))
.addContainerGap(15, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 275, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(CheckButton)
.addGap(0, 35, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void CheckButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int x, y, i = 1;
for(x = 0; x < jTable1.getRowCount(); x++){
for(y = 0; y < jTable1.getColumnCount(); y++){
TableCellRenderer Tcr = jTable1.getCellRenderer(x, y);
Component c = Tcr.getTableCellRendererComponent(jTable1, jTable1.getValueAt(x, y), false, false, x, y);
if(jTable1.getValueAt(x, y) == null)
{
jTable1.setValueAt("P", x, y);
}
if(jTable1.getValueAt(x, y) != null && !jTable1.getValueAt(x, y).equals("F") && !jTable1.getValueAt(x, y).equals(" ")){
System.out.print(jTable1.getValueAt(x, y)+"\n");
if(!jTable1.getValueAt(x, y).toString().contains("/P") && !jTable1.getValueAt(x, y).toString().equals("P")){
System.out.print("prima del maggiore di 24");
if(Double.parseDouble(jTable1.getValueAt(x, y).toString()) > 24){
System.out.print("leggi il 25, almeno?");
c.setBackground(java.awt.Color.red);
}
}
}
}
}
}
/**
* @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(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Example().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton CheckButton;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
// End of variables declaration
}
CellRenderer renderer = new DefaultCellRenderer(){
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
JLabel label = (JLabel)c;
if (yourAlgorithmToDetectTheProperCell){ //i can't insert your condition from above, it's overkill ^^
label.setBackGround(Color.RED);
}
return label;
}
};
table.setCellRenderer(renderer);
class ColorRenderer extends DefaultTableCellRenderer
{
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
if (isSelected)
setBackground( table.getSelectionBackground() );
else
{
setBackground( table.getBackground() );
try
{
int number = Integer.parseInt( value.toString() );
if (number > 24)
setBackground( Color.RED );
}
catch(Exception e) {}
}
return this;
}
}