문자열 길이를 찾는 프로그램을 만들었습니다.문자열 길이를 찾기위한 프로그램 만들기
이 내 코드 :
JTInputString = JTextfild (For input)
JLResult = Jlabel (For Show Lenght)
/*
* 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 UIs;
/**
*
* @author Mr-Enginner
*/
public class String extends javax.swing.JFrame {
/**
* Creates new form String
*/
public String() {
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")
public static void main(java.lang.String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new String().setVisible(true);
}
});
}
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
JTInputString = new javax.swing.JTextField();
JBCalculate = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
JLResult = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
JBCalculate.setText("محاسبه طول رشته");
JBCalculate.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JBCalculateActionPerformed(evt);
}
});
jLabel1.setText("طول رشته :");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addComponent(JTInputString)
.addContainerGap())
.addGroup(layout.createSequentialGroup()
.addGap(134, 134, 134)
.addComponent(JBCalculate)
.addContainerGap(147, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(JLResult)
.addGap(104, 104, 104)
.addComponent(jLabel1)
.addGap(43, 43, 43))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(45, 45, 45)
.addComponent(JTInputString, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(JBCalculate)
.addGap(39, 39, 39)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(JLResult))
.addContainerGap(115, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void JBCalculateActionPerformed(java.awt.event.ActionEvent evt) {
Lenght();
Clearform();
}
/**
* @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(String.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(String.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(String.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(String.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 String().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton JBCalculate;
private javax.swing.JLabel JLResult;
private javax.swing.JTextField JTInputString;
private javax.swing.JLabel jLabel1;
// End of variables declaration
public void Lenght(){
String Str=JTInputString.getText();
int str=Str.length();
JLResult.setText(""+str);
}
public void Clearform(){
JTInputString.setText("");
JLResult.setText("");
}
}
와 나는이 코드를 사용하여. 그러나 어떤 일이 표시되지 :
java.lang.String Str = JTInputString.getText();
int str = Str.length();
JLResult.setText("" + str);
을하지만 그것은 나를 JLResult
에서 계산 표시되지 않습니다.
무엇이 문제입니까? 스레드 "AWT-EventQueue의-0"java.lang.RuntimeException가에서
오류
예외 : Uncompilable 소스 코드 - 호환되지 않는 유형 : java.lang.String의이 사용자 인터페이스에서 UIs.String 로 변환 할 수 없습니다. UIs.String.JBCalculateActionPerformed (String.java:90)의 String.Lenght (String.java:137) UIs.String.access $ 000 (String.java:12)의 (UIs.String $ 2.actionPerformed (String. java : 47) 에서 javax.swing.AbstractButton.fireActionPerformed (AbstractButton.java:2022) 에서 javax.swing.AbstractButton $ Handler.actionPerformed (AbstractButton.j AVA : 2348) javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:402) 에서 javax.swing.DefaultButtonModel.setPressed (DefaultButtonModel.java:259) 에서 javax.swing.plaf.basic.BasicButtonListener.mouseReleased에서 ((Component.java:6533) (javax.swing.JComponent.processMouseEvent (JComponent.java:3324) at java.awt.Component.processEvent (Component, ComponentBuilder.Java:252) 에서 ComponentSupportMouseEvent를 호출합니다. java : 6298) at java.awt.Container.processEvent (Container.java:2236) at java.awt.Component.dispatchEventImpl (Component.java:4889) at java.awt.Container.dispatchEventImpl (Container.java : 2294) at java.awt.Component.dispatchEvent (Component.java:4 java.awt.LightweightDispatcher.dispatchEvent에서 java.awt.LightweightDispatcher.processMouseEvent (Container.java:4525) 에서 java.awt.LightweightDispatcher.retargetMouseEvent (Container.java:4888)에서 711) (Container.java:4466) at java.awt.Container.dispatchEventImpl (Container.java:2280) at java.awt.Window.dispatchEventImpl (Window.java:2746) at java.awt.Component.dispatchEvent (Component.java:4711) at java.awt.EventQueue.dispatchEventImpl (EventQueue.java:758) 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.AccessCont java.awt.EventQueue에서 java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege에서 java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege (ProtectionDomain.java:76) (ProtectionDomain.java:86) 에서 roller.doPrivileged (기본 방법) $ 4.run (EventQueue.java:731) at java.awt.EventQueue $ 4.run (EventQueue.java:729) at java.security.AccessController.doPrivileged (네이티브 메소드) at java.security.ProtectionDomain $ JavaSecurityAccessImpl. java.awt.EventDispatchThread에서 java.awt.EventDispatchThread.pumpOneEventForFilters에서 java.awt.EventQueue.dispatchEvent (EventQueue.java:728) (EventDispatchThread.java:201) 에서 doIntersectionPrivilege (ProtectionDomain.java:76) .java.awt.EventDispatchThread.pumpEvents에서 java.awt.EventDispatchThread.pumpEvents에서 java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:105) 에서 pumpEventsForFilter (EventDispatchThread.java:116) (EventDispatchThread.java:101) (java.awt.EventDispatchThread.run에서 EventDispatchThread.java:93) (EventDispatchThread.java:82는)
은 내가 [MCVE]을 게시하는 것이 좋습니다는 (http://stackoverflow.com/help/mcve) 문제의 정확한 상황을 명확히한다. – copeg
농담하는 거지? 이미 Str.length()에 들어 있습니다. for 루프는 필요 없습니다. 메소드는 길이라고해야하며 String보다 먼저 java.lang이 필요하지 않으므로 변수는 소문자로 시작해야합니다. 희망이 도움이 :) – ManoDestra
'String str = JTInputString'을 사용하는 경우 오류가 표시됩니다. – Kianoush