Java lang illegalstateexception catch

Class IllegalStateException

Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

Constructor Summary

Constructs a new exception with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause ).

Method Summary

Methods declared in class java.lang.Throwable

Methods declared in class java.lang.Object

Constructor Details

IllegalStateException

Constructs an IllegalStateException with no detail message. A detail message is a String that describes this particular exception.

IllegalStateException

Constructs an IllegalStateException with the specified detail message. A detail message is a String that describes this particular exception.

IllegalStateException

Constructs a new exception with the specified detail message and cause. Note that the detail message associated with cause is not automatically incorporated in this exception’s detail message.

IllegalStateException

Constructs a new exception with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause ). This constructor is useful for exceptions that are little more than wrappers for other throwables (for example, PrivilegedActionException ).

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Java Guides

This Java example demonstrates the usage of java.lang.IllegalStateException class and when does this exception occurs with a simple example.

IllegalStateException class signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

IllegalStateException Class Diagram

Java IllegalStateException Example

In this example, the Iterator.remove() method throws an IllegalStateException — if the next method has not yet been called, or the remove method has already been called after the last call to the next method.

package com.javaguides.corejava; import java.util.ArrayList; import java.util.Iterator; import java.util.List; public class IllegalStateExceptionExample < public static void main(String[] args) < List  Integer > intList = new ArrayList < >(); for (int i = 0; i  10; i++) < intList.add(i); > Iterator  Integer > intListIterator = intList.iterator(); // Initialized with index at -1 try < intListIterator.remove(); // IllegalStateException > catch (IllegalStateException e) < System.err.println("IllegalStateException caught!"); e.printStackTrace(); > > >

IllegalStateException caught! java.lang.IllegalStateException at java.util.ArrayList$Itr.remove(ArrayList.java:872) at com.javaguides.corejava.IllegalStateExceptionExample.main(IllegalStateExceptionExample.java:21)

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Android IllegalStateException tutorial with examples

Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

Example

The following code shows how to use IllegalStateException from java.lang.

import android.media.MediaRecorder; import java.io.IOException; /**// w w w .d e m o 2 s . c o m * Created by Sert on 2014/08/01. */ public class Recording extends MediaRecorder < public Recording(String outputPath) < setAudioSource(AudioSource.MIC); setOutputFormat(OutputFormat.MPEG_4); setAudioEncoder(AudioEncoder.AAC); setAudioSamplingRate(22050); setOutputFile(outputPath); >public void recStart() < try < prepare(); > catch (IllegalStateException e) e.printStackTrace(); > catch (IOException e) < e.printStackTrace(); >start(); > public void recEnd() < stop(); reset(); release(); >>

/**/*w w w . d e m o 2 s .c o m */ * Developed by Lancelotmobile Ltd. (c) 2012 * http://www.lancelotmobile.com * * Copyright (c) 2012 Lancelotmobile.com * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **/ import com.adobe.fre.FREContext; import com.adobe.fre.FREFunction; import com.adobe.fre.FREInvalidObjectException; import com.adobe.fre.FREObject; import com.adobe.fre.FRETypeMismatchException; import com.adobe.fre.FREWrongThreadException; import com.flurry.android.FlurryAgent; public class StartSession implements FREFunction < @Override public FREObject call(FREContext context, FREObject[] args) < FREObject sessionIdObj = args[0]; try < String sessionId = sessionIdObj.getAsString(); FlurryAgent.onStartSession(context.getActivity(), sessionId); > catch (IllegalStateException e) e.printStackTrace(); > catch (FRETypeMismatchException e) < e.printStackTrace(); >catch (FREInvalidObjectException e) < e.printStackTrace(); >catch (FREWrongThreadException e) < e.printStackTrace(); >return null; > >

import java.io.IOException; import android.media.MediaRecorder; import android.os.Environment; /**// w w w . d em o2 s . c o m * Class that handles detecting environmental noise using media recorder. * @author Kristofer * */ public class SoundDetector < private MediaRecorder mediaRecorder; public void start() < if (mediaRecorder == null) < mediaRecorder = new MediaRecorder(); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); mediaRecorder.setOutputFile("/dev/null"); try < mediaRecorder.prepare(); > catch (IllegalStateException e) // TODO Auto-generated catch block e.printStackTrace(); > catch (IOException e) < // TODO Auto-generated catch block e.printStackTrace(); > mediaRecorder.start(); > > public void stop() < if (mediaRecorder != null) < mediaRecorder.stop(); mediaRecorder.release(); mediaRecorder = null; >> public double getNoiseLevel() < if (mediaRecorder != null) < return mediaRecorder.getMaxAmplitude(); > return 0; > >

Related

• Android IllegalArgumentException getCause() Returns the cause of this throwable or null if the cause is nonexistent or unknown.
• Android IllegalArgumentException printStackTrace(PrintStream s) Prints this throwable and its backtrace to the specified print stream.
• Android java.lang IllegalStateException
• Android IllegalStateException tutorial with examples
• Android IllegalStateException printStackTrace()
• Android IllegalStateException IllegalStateException(String s)
• Android IllegalStateException IllegalStateException(Throwable cause)

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