我正在Netbeans的一个学校项目上工作。 试图构建一个简单的GUI面板和框架，其中包含一些选项来绘制一些对象。我开始添加一些新的文本字段和一个按钮，让用户绘制一个具有高度，宽度和数量等输入的对象。
在此之后程序将不再运行，它会抛出一个看起来像某种非法论点的异常？ 这是错误：
Exception in thread "AWT-EventQueue-0"
java.lang.IllegalArgumentException: Invalid size
at javax.swing.GroupLayout.checkResizeType(GroupLayout.java:354)
at javax.swing.GroupLayout.checkSize(GroupLayout.java:339)
at javax.swing.GroupLayout.access$500(GroupLayout.java:208)
at javax.swing.GroupLayout$GapSpring.<init>(GroupLayout.java:3173)
at javax.swing.GroupLayout$Group.addGap(GroupLayout.java:1550)
at
javax.swing.GroupLayout$SequentialGroup.addGap(GroupLayout.java:1855)
at ProjectPanel.initComponents(ProjectPanel.java:322)
at ProjectPanel.<init>(ProjectPanel.java:26)
at ProjectFrame.<init>(ProjectFrame.java:18)
at ProjectFrame$1.run(ProjectFrame.java:78)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
atjava.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
BUILD STOPPED (total time: 9 seconds)
我尝试调试并查看此错误的创建位置，但我似乎无法找到特定的行。
我很抱歉发布这个完整的代码，但我似乎无法找到另一个选项来让它重新运行..
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
public class ProjectPanel extends javax.swing.JPanel {
private int kind = 0;
private int strandstoel;
private String vliegerKleur = "Groen";
private int aantal, hoogte, breedte;
public ProjectPanel() {
initComponents();
repaint();
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
//Strand
Color myBeach = new Color(240, 230, 140);
g.setColor(myBeach);
g.fillRect(0, 600, 1500, 400);
//Sky
Color mySky = new Color(245, 255, 250);
g.setColor(mySky);
g.fillRect(0, 0, 1500, 600);
//SunShine
if (jCheckBoxZon.isSelected()) {
Color sunShine = new Color(255, 215, 0);
g.setColor(sunShine);
g.fillOval(500, 150, 200, 200);
} else {
// REGEN + DONKERE LUCHT
Color darkSky = new Color(128, 128, 128);
g.setColor(darkSky);
g.fillRect(0, 0, 1500, 600);
Color rain = new Color(30, 144, 255);
g.setColor(rain);
g.drawLine(100, 50, 100, 200);
g.drawLine(200, 50, 200, 1);
g.drawLine(300, 50, 300, 100);
g.drawLine(400, 50, 400, 1);
g.drawLine(500, 50, 500, 100);
g.drawLine(600, 50, 600, 1);
g.drawLine(700, 50, 700, 150);
g.drawLine(800, 50, 800, 1);
g.drawLine(850, 50, 850, 200);
g.drawLine(900, 50, 900, 150);
g.drawLine(1000, 50, 1000, 1);
g.drawLine(1100, 50, 1100, 100);
g.drawLine(1150, 50, 1150, 200);
g.drawLine(1200, 50, 1200, 1);
g.drawLine(1300, 50, 1300, 150);
g.drawLine(1400, 50, 1400, 1);
g.drawLine(1500, 50, 1500, 100);
}
//Zee
Color seaShore = new Color(0, 191, 255);
g.setColor(seaShore);
g.fillRect(0, 400, 1500, 200);
//Kite
Color flyKite = new Color(0, 255, 127);
g.setColor(flyKite);
g.fillPolygon(new int[]{100, 300, 350}, new int[]{100, 300, 65},
3);
// Kinderen
int x1 = 125;
int x2 = 150;
int x3 = 130;
int x4 = 200;
int x5 = 95;
int x6 = 175;
int x7 = 205;
int y1 = 40;
int y2 = 150;
int y3 = 50;
int y4 = 200;
int y5 = 250;
int y6 = 95;
int y7 = 75;
int y8 = 205;
int y9 = 225;
for (int i = 0; i < kind; i++) {
g.setColor(Color.black);
g.fillOval( x3,330, 40,40 ); // Hoofd
g.drawLine( x2,370, y2,380 ); // Nek
g.fillRect( x1,380, 50,150 ); // Lichaam
g.drawLine( x2,400, y4,470 ); // R Arm
g.drawLine( x4,430, y5,470 );
g.drawLine( x1,430, y1,490 ); // L Arm
g.drawLine( x1,530, y6,620 ); // L Been
g.drawLine( x5,620, y7,620 );
g.drawLine( x6,530, y8,620 ); // R Been
g.drawLine( x7,620, y9,620 );
x1 = 100 + x1;
x2 = x2 + 100;
x3 = x3 + 100;
x4 = x4 + 100;
x5 = x5 + 100;
x6 = x6 + 100;
x7 = x7 + 100;
y1 = 100 + y1;
y2 = y2 + 100;
y3 = y3 + 100;
y4 = y4 + 100;
y5 = y5 + 100;
y6 = y6 + 100;
y7 = y7 + 100;
y8 = y8 + 100;
}
//afbeelding
int tel;
int xSS = 100;
int ySS = 550;
for (tel = 1; tel <= strandstoel; tel++) {
Graphics2D g2d = (Graphics2D) g;
ImageIcon strandstoel = new
ImageIcon(this.getClass().getResource("/images/beach-chair.png"));
g2d.drawImage(strandstoel.getImage(), xSS, ySS, null);
xSS = xSS + 250;
ySS = ySS + 0;
}
//RookPluim
int teller;
for (teller = 1; teller <= aantal; teller++) {
g.setColor(Color.GRAY);
}
// Versiering Vlieger
if (null != vliegerKleur) {
switch (vliegerKleur) {
case "Rood":
g.setColor(Color.RED);
g.fillOval(120, 100, 10, 10);
g.fillOval(160, 95, 10, 10);
g.fillOval(200, 90, 10, 10);
g.fillOval(240, 85, 10, 10);
g.fillOval(280, 80, 10, 10);
g.fillOval(320, 70, 20, 20);
g.fillOval(320, 120, 10, 10);
g.fillOval(310, 160, 10, 10);
g.fillOval(305, 200, 10, 10);
g.fillOval(299, 240, 10, 10);
g.fillOval(294, 280, 10, 10);
break;
case "Oranje":
g.setColor(Color.ORANGE);
g.fillOval(120, 100, 10, 10);
g.fillOval(160, 95, 10, 10);
g.fillOval(200, 90, 10, 10);
g.fillOval(240, 85, 10, 10);
g.fillOval(280, 80, 10, 10);
g.fillOval(320, 70, 20, 20);
g.fillOval(320, 120, 10, 10);
g.fillOval(310, 160, 10, 10);
g.fillOval(305, 200, 10, 10);
g.fillOval(299, 240, 10, 10);
g.fillOval(294, 280, 10, 10);
break;
case "Blauw": // Was normaal groen vlgs de opdracht,
maar dit was niet zo goed zichtbaar
g.setColor(Color.BLUE);
g.fillOval(120, 100, 10, 10);
g.fillOval(160, 95, 10, 10);
g.fillOval(200, 90, 10, 10);
g.fillOval(240, 85, 10, 10);
g.fillOval(280, 80, 10, 10);
g.fillOval(320, 70, 20, 20);
g.fillOval(320, 120, 10, 10);
g.fillOval(310, 160, 10, 10);
g.fillOval(305, 200, 10, 10);
g.fillOval(299, 240, 10, 10);
g.fillOval(294, 280, 10, 10);
break;
default:
break;
}
}
repaint();
}
private void jCheckBoxZonActionPerformed(java.awt.event.ActionEvent
evt) {
// TODO add your handling code here:
repaint();
}
private void jSliderKinderenMouseReleased(java.awt.event.MouseEvent
evt) {
// TODO add your handling code here:
kind = this.jSliderKinderen.getValue();
repaint();
}
private void
jTextFieldAantalStoelenActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
try{
strandstoel =
Integer.parseInt(this.jTextFieldAantalStoelen.getText());
} catch(Exception e){
JOptionPane.showMessageDialog(null,"Vul een getal in");
}
repaint();
}
private void jList1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
vliegerKleur = this.jList1.getSelectedValue();
repaint();
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
try{
aantal = Integer.parseInt(this.jTextFieldAantal.getText());
breedte = Integer.parseInt(this.jTextFieldBreedte.getText());
hoogte = Integer.parseInt(this.jTextFieldHoogte.getText());
} catch(Exception e){
JOptionPane.showMessageDialog(null,"Vul een aantal + Hoogte en
Breedte in");
}
repaint();
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JCheckBox jCheckBoxZon;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JList<String> jList1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JSlider jSliderKinderen;
private javax.swing.JTextField jTextFieldAantal;
private javax.swing.JTextField jTextFieldAantalStoelen;
private javax.swing.JTextField jTextFieldBreedte;
private javax.swing.JTextField jTextFieldHoogte;
// End of variables declaration
}
答案 0 :(得分：0)
好吧，该错误是因为有时当您使用textBox和Labels或其他组件创建jFrame时，却忘记了例如label的标识符
答案 1 :(得分：0)
该错误的另一个可能原因（例如我的情况）是您可能在不知不觉中添加了诸如JLabel，JTextField等元素，但它很小很小您无法识别它的存在，因此在编译时它的大小较小是无效的。
要解决此问题，请打开导航器，然后单击每个元素，检查其在JFrame上的位置，以便您也可以看到该微小的元素。
我让它那样工作。