制作表格与JPanels列表（应用百分比大小列）
在这篇文章中制作带有JPanel列表的表格我可以制作一个带有面板列表的表格。 这个表有很多function，但我需要一个新的function，它应用百分比列。这意味着我喜欢所有列的宽度不等于和一个浮点数组确定。
这是我的class级表：
import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.Vector; public class PanelTable extends JPanel { private String data[][]; private String columns[]; private int numberOfRows; private int numberOfColumns; private JTextArea[] header; private JTextArea[][] cell; public PanelTable(String data[][], String columns[]) { setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); this.data = data; this.columns = columns; numberOfRows = data.length; numberOfColumns = columns.length; makeHeader(); makeCells(); } public void makeCells() { cell = new JTextArea[numberOfRows][numberOfColumns]; for (int rowIndex = 0; rowIndex < numberOfRows; rowIndex++) { add(getRow(numberOfColumns, rowIndex)); } } public void makeHeader() { header = new JTextArea[numberOfColumns]; for (int columnIndex = 0; columnIndex < numberOfColumns; columnIndex++) { JTextArea ta = new JTextArea(); ta.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); ta.setBackground(new Color(57, 77, 112)); ta.setForeground(Color.WHITE); ta.setText(columns[columnIndex]); ta.setFont(new Font("Calibri Light", Font.BOLD, 25)); ta.setLineWrap(true); ta.setWrapStyleWord(true); ta.setEditable(false); header[columnIndex] = ta; } JPanel rowHeader = new JPanel(); rowHeader.setLayout(new BoxLayout(rowHeader, BoxLayout.X_AXIS)); for (int i = 0; i < numberOfColumns; i++) { rowHeader.add(header[i]); } add(rowHeader); } public Component getRow(int numberOfColumns, int rowIndex) { JPanel row = new JPanel(); //use GridLayout if you want equally spaced columns row.setLayout(new BoxLayout(row, BoxLayout.X_AXIS)); for (int columnIndex = 0; columnIndex < numberOfColumns; columnIndex++) { row.add(getCell(rowIndex, columnIndex)); } return row; } public Component getCell(int rowIndex, int columnIndex) { if (cell[rowIndex][columnIndex] == null) { JTextArea ta = new JTextArea(); ta.setLineWrap(true); ta.setWrapStyleWord(true); ta.setEditable(false); ta.setSize(50, ta.getHeight()); ta.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); ta.setBorder(BorderFactory.createLineBorder(Color.BLACK)); ta.setText(data[rowIndex][columnIndex]); ta.setFont(new Font("Bmitra", Font.BOLD, 15)); cell[rowIndex][columnIndex] = ta; } return cell[rowIndex][columnIndex]; } } 这是测试的gui示例：
import javax.swing.*; import java.awt.*; public class GUI extends JFrame { private PanelTable table; private JScrollPane scrollPane; public GUI(){ super("Bank Table"); JPanel contentPanel = new JPanel(); setContentPane(contentPanel); contentPanel.setBorder(BorderFactory.createEmptyBorder(10,10,10,10)); setLayout(new BorderLayout()); setMinimumSize(new Dimension(1000,700)); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); String[][] data= new String[][]{{"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/01"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/02"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/03"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/04"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/05"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/06"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/07"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/08"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/09"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/10"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/11"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/12"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/13"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/14"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/15"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/16"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/17"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/18"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/19"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/20"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/21"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/22"}, {"0212670003009", "ص 318", "77081634","3800ddddddddddddddddddddddddddddddddddddddddd0000","0","331142","2102","وصول چک","08:56:46","1397/05/23"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/24"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/25"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/26"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/15"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/16"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/17"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/18"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/19"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/20"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/21"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/22"}, {"0212670003009", "ص 318", "77081634","3800ddddddddddddddddddddddddddddddddddddddddd0000","0","331142","2102","وصول چک","08:56:46","1397/05/23"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/24"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/25"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/26"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/15"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/16"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/17"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/18"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/19"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/20"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/21"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/22"}, {"0212670003009", "ص 318", "77081634","3800ddddddddddddddddddddddddddddddddddddddddd0000","0","331142","2102","وصول چک","08:56:46","1397/05/23"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/24"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/25"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/26"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/15"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/16"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/17"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/18"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/19"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/20"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/21"}, {"0212670003009", "ص 318", "77081634","380dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd00000","0","331142","2102","وصول چک","08:56:46","1397/05/22"}, {"0212670003009", "ص 318", "77081634","3800ddddddddddddddddddddddddddddddddddddddddd0000","0","331142","2102","وصول چک","08:56:46","1397/05/23"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/24"}, {"0212670003009", "ص 318", "77081634","38000ddddddddddddddddddddddddddddddddddddddd000","0","331142","2102","وصول چک","08:56:46","1397/05/25"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/26"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/27"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/28"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/29"}, {"0212670003009", "ص 318", "77081634","38000000","0","331142","2102","وصول چک","08:56:46","1397/05/30"}}; String[] columns= new String[]{"شماره حساب", "اطلاعات اضافه", "مانده","واریز","برداشت","فیش/ حواله","کد شعبه","شرح","ساعت","تاریخ"}; System.out.println("Hey"); PanelTable table = new PanelTable(data,columns); System.out.println("!!!"); scrollPane = new JScrollPane(table); scrollPane.getVerticalScrollBar().setUnitIncrement(50); add(scrollPane,BorderLayout.CENTER); // JTextArea textArea = new JTextArea(); // textArea.setLineWrap(true); // textArea.setWrapStyleWord(true); // textArea.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); // textArea.setText("Alireza"); // add(textArea,BorderLayout.NORTH); setVisible(true); } public static void main(String args[]){ GUI gui =new GUI(); } }
这样做：首先创建一个宽度大小的数组。 例如 ：
final int[] columnsWidth = { 300, 100, 50, 300, 50 };
然后在你的方法makeHeader和getCell上，你设置文本区域的所有属性，也设置首选大小。 请参阅下面的代码。 这应该给你基于size数组的宽度。
ta.setPreferredSize(new Dimension(columnsWidth[columnIndex], ta.getHeight()));
请让我知道这对你有没有用 ：）
以下是完整的代码：对于GUI：
import javax.swing.*; import java.awt.*; public class GUI extends JFrame { private PanelTable2 table; private JScrollPane scrollPane; public GUI(){ super("Bank Table"); JPanel contentPanel = new JPanel(); setContentPane(contentPanel); contentPanel.setBorder(BorderFactory.createEmptyBorder(10,10,10,10)); setLayout(new BorderLayout()); setMinimumSize(new Dimension(1000,700)); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final String[] columns = { "Big Column", "Serodys", "Ramírez", "Entrada", "MercaSur" }; final String[][] data = {{"2323", "Hundreds","2323", "Hundreds","2323"},{"2323", "Hundreds","2323", "Hundreds","2323"}}; // final PanelTable22 panel = new PanelTable22(data, columns); System.out.println("Hey"); PanelTable2 table = new PanelTable2(data,columns); System.out.println("!!!"); scrollPane = new JScrollPane(table); scrollPane.getVerticalScrollBar().setUnitIncrement(50); add(scrollPane,BorderLayout.CENTER); setVisible(true); } public static void main(String args[]){ GUI gui =new GUI(); } }
对于表模型：
import java.awt.Color; import java.awt.Component; import java.awt.ComponentOrientation; import java.awt.Dimension; import java.awt.Font; import javax.swing.BorderFactory; import javax.swing.BoxLayout; import javax.swing.JPanel; import javax.swing.JTextArea; public class PanelTable2 extends JPanel { private String data[][]; private String columns[]; private int numberOfRows; private int numberOfColumns; private JTextArea[] header; private JTextArea[][] cell; final int[] columnsWidth = { 300, 100, 50, 300, 50 }; public PanelTable2(String data[][], String columns[]) { setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); this.data = data; this.columns = columns; numberOfRows = data.length; numberOfColumns = columns.length; makeHeader(); makeCells(); } public void makeCells() { cell = new JTextArea[numberOfRows][numberOfColumns]; for (int rowIndex = 0; rowIndex < numberOfRows; rowIndex++) { add(getRow(numberOfColumns, rowIndex)); } } public void makeHeader() { header = new JTextArea[numberOfColumns]; for (int columnIndex = 0; columnIndex < numberOfColumns; columnIndex++) { JTextArea ta = new JTextArea(); ta.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); ta.setPreferredSize(new Dimension(columnsWidth[columnIndex], ta.getHeight())); ta.setBackground(new Color(57, 77, 112)); ta.setForeground(Color.WHITE); ta.setText(columns[columnIndex]); ta.setFont(new Font("Calibri Light", Font.BOLD, 25)); ta.setLineWrap(true); ta.setWrapStyleWord(true); ta.setEditable(false); header[columnIndex] = ta; } JPanel rowHeader = new JPanel(); rowHeader.setLayout(new BoxLayout(rowHeader, BoxLayout.X_AXIS)); for (int i = 0; i < numberOfColumns; i++) { rowHeader.add(header[i]); } add(rowHeader); } public Component getRow(int numberOfColumns, int rowIndex) { JPanel row = new JPanel(); //use GridLayout if you want equally spaced columns row.setLayout(new BoxLayout(row, BoxLayout.X_AXIS)); for (int columnIndex = 0; columnIndex < numberOfColumns; columnIndex++) { row.add(getCell(rowIndex, columnIndex)); } return row; } public Component getCell(int rowIndex, int columnIndex) { if (cell[rowIndex][columnIndex] == null) { JTextArea ta = new JTextArea(); ta.setLineWrap(true); ta.setWrapStyleWord(true); ta.setEditable(false); ta.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); ta.setBorder(BorderFactory.createLineBorder(Color.BLACK)); ta.setText(data[rowIndex][columnIndex]); ta.setFont(new Font("Bmitra", Font.BOLD, 15)); ta.setPreferredSize(new Dimension(columnsWidth[columnIndex], ta.getHeight())); cell[rowIndex][columnIndex] = ta; } return cell[rowIndex][columnIndex]; } }
关键是这些行：
//use GridLayout if you want equally spaced columns row.setLayout(new BoxLayout(row, BoxLayout.X_AXIS));
要将约束应用于列，可以使用GridBagLayout而不是BoxLayout 。
这是使用GridBagLayout一个非常基本的mcve：
import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Font; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.io.IOException; import javax.swing.BorderFactory; import javax.swing.BoxLayout; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextArea; public class PanelTable2 extends JPanel { public PanelTable2() { setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); setPreferredSize(new Dimension(400, 150)); add(getRow()); } Component getRow() { int[] percent = {10,40,50}; JPanel row = new JPanel(); GridBagLayout layout = new GridBagLayout(); row.setLayout(layout); GridBagConstraints gbc = new GridBagConstraints(); gbc.fill = GridBagConstraints.HORIZONTAL; gbc.anchor = GridBagConstraints.CENTER; for (int i= 0; i < percent.length; i++) { gbc.gridy = 0 ; gbc.gridx = i; gbc.weightx = percent[i]; Component component = getCell(); row.add(component, gbc); } return row; } Component getCell() { JTextArea ta = new JTextArea(4,11); ta.setBorder(BorderFactory.createLineBorder(Color.BLACK)); ta.setFont(new Font("Bmitra", Font.BOLD, 15)); return ta; } public static void main(String[] args) throws IOException{ JFrame window = new JFrame(); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.add(new PanelTable2()); window.pack(); window.setVisible(true); } }
请注意，mcve不应代表您的应用程序。 它应该是问题的简单表示。
GridBagLayout绝不是唯一的选择。 您可以像SpringLayout一样探索其他替代方案。