when running this code i am getting this java.lang.NumberFormatException: For input string: “5.3” Exception. how can we resolve this type of exception.any other way we can handle this without try and catch? value can be any thing.it’s not fixed that it will always be float.it can be integer and double too.is there any way we can handle all three no matter what comes .without using try catch.
passing this in line 79 PreferenceConstants.DEVICE_LAST_ERROR_CODE
public static final String DEVICE_LAST_ERROR_CODE = "device_last_error_code";
please find the code below.
package com.pds.ftp.view.activity;
import android.content.res.Configuration;
import android.os.Bundle;
import androidx.annotation.NonNull;
import com.pds.ftp.R;
import com.pds.ftp.app.FTPApp;
import com.pds.ftp.constant.UIConstant;
import com.pds.ftp.infrastructure.ReaderUsbInterf;
import com.pds.ftp.middleware.FTPPrivilegedServiceProvider;
import com.pds.ftp.middleware.PollingLooperThread;
import com.pds.ftp.middleware.ShutDownManager;
import com.pds.ftp.model.dbsync.DBSynchronizationPool;
import com.pds.ftp.transaction.shutdown.EntryExitCheck;
import com.pds.ftp.transaction.shutdown.ShutdownStateCache;
import com.pds.ftp.utils.Util;
import com.pds.hardwareadapter.ingenicoreader.IngenicoReaderDirect;
import com.pds.infrastructure.constants.PreferenceConstants;
import com.pds.infrastructure.interfaces.ILogOperation;
import com.pds.infrastructure.logger.LogCriticalEvent;
import com.pds.infrastructure.logger.LogInfoEvent;
import com.pds.infrastructure.logger.LogWarningEvent;
import javax.inject.Inject;
public class PowerOffActivity extends BaseActivity {
public static final String TYPE = "action_type";
public static final int TYPE_SHUTDOWN = 0;
public static final int TYPE_RESTART = 1;
public static final int TYPE_END_OF_BUSINESS_HOURS = 2;
public static final int SHUTDOWN_DELAY = 1000 * 30;
public static final int SHUTDOWN_WAIT = 1000;
public static final int READER_REBOOT = 3;
@Inject
ILogOperation logOperation;
@Inject
EntryExitCheck entryExitCheck;
@Inject
ShutdownStateCache shutdownStateCache;
@Inject
IngenicoReaderDirect ingenicoReaderDirect;
@Inject
PollingLooperThread pollingLooperThread;
@Inject
ReaderUsbInterf usbInterf;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
isShutDownRequestInitiated = true;
setContentView(R.layout.activity_power_off);
shutdownStateCache.setShutdownState(true); //Shutdown state is true as power is disconnected
logOperation.logInfo(LogInfoEvent.GENERAL_INFO, "PowerOff Screen Started");
}
boolean keepOnRunning = true;
private void checkForPendingTaskBeforeShutdown() {
keepOnRunning = true;
long startTime = System.currentTimeMillis();
new Thread(new Runnable() {
@Override
public void run() {
pollingLooperThread.onpause();
if (getIntent() != null) {
int type = getIntent().getIntExtra(TYPE, 0);
int currentErrorCode = Integer.parseInt(configParams.getString(PreferenceConstants.DEVICE_LAST_ERROR_CODE));
int restartCount = configParams.getInt(PreferenceConstants.PREF_FTP_RESTART_COUNT);
if (type == TYPE_END_OF_BUSINESS_HOURS || (currentErrorCode == LogCriticalEvent.CARD_READER_MALFUNCTION && restartCount == 1)) {
logOperation.logInfo(LogInfoEvent.GENERAL_INFO, "Calling reader reset command due to EOB or CARD_READER_MALFUNCTION. currentErrorCode:: "+currentErrorCode);
try {
Thread.sleep(3500);
} catch (Exception e) {
logOperation.logVerbose(LogInfoEvent.GENERAL_INFO, e,"Exception caused in Thread.sleep during reset reader");
}
ingenicoReaderDirect.resetReader();
}
} else{
logOperation.logInfo(LogInfoEvent.GENERAL_INFO, "getIntent() is null");
}
while (keepOnRunning) {
if (entryExitCheck.getShutDownDBTaskCounter() == 0) {
logOperation.logVerbose(LogInfoEvent.GENERAL_INFO, "All threads are completed");
keepOnRunning = false;
} else {
if ((System.currentTimeMillis() - startTime) >= SHUTDOWN_DELAY) {
logOperation.logVerbose(LogInfoEvent.GENERAL_INFO, "Time exceeds 30 sec,initiating shutdown");
keepOnRunning = false;
} else {
logOperation.logVerbose(LogInfoEvent.GENERAL_INFO, "Threads still running");
}
}
try {
Thread.sleep(SHUTDOWN_WAIT);
} catch (Exception e) {
logOperation.logInfo(LogInfoEvent.GENERAL_INFO,e,"checkForPendingTaskBeforeShutdown Exception");
}
}
performShutdownProcess();
}
}).start();
}
@Override
protected void onResume() {
super.onResume();
checkForPendingTaskBeforeShutdown();
}
private void performShutdownProcess() {
if (!Util.shutdown_file_available()) {
FTPApp.isShuttingDownState = true;
Util.setLastShutDownDateTime(configParams);
if (getIntent() != null) {
int type = getIntent().getIntExtra(TYPE, 0);
String state = getIntent().getStringExtra(UIConstant.UISTATE);
if (type == TYPE_END_OF_BUSINESS_HOURS) {
logOperation.logWarning(LogWarningEvent.DEVICE_SCHEDULED_OUT_OF_SERVICE, 2, "Device restarting because of end of business hours");
}
/*if (state.contains(UIConstant.IGNITION_OFF)) {
FTPApp.isShuttingDownState = true;
}*/
if (type == TYPE_RESTART || type == TYPE_END_OF_BUSINESS_HOURS|| type == READER_REBOOT) {
logOperation.logWarning(LogWarningEvent.DEVICE_REBOOTED, "Device is RESTARTING.. Coming from:- " + state);
} else {
logOperation.logWarning(LogWarningEvent.DEVICE_SHUT_DOWN, "Device is shutting down Reason:- IGNITION... Coming From:- " + state);
}
} else {
logOperation.logWarning(LogWarningEvent.DEVICE_REBOOTED, "Device is RESTARTING. Reason:- OTHER");
}
usbInterf.close();
ShutDownManager.getInstance().shutDownDevice();
}
}
@Override
void prepareTextToSpeechAndSpeak() {
}
@Override
public void onConfigurationChanged(@NonNull Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
}
getting this in logs it looks like this exception is coming from line 79
4,0,05.16.2022_09.09.00.822,java.lang.NumberFormatException: For input string: "5.3" java.lang.Integer.parseInt(Integer.java:608) java.lang.Integer.parseInt(Integer.java:643) com.pds.ftp.view.activity.PowerOffActivity$1.run(PowerOffActivity.java:79) java.lang.Thread.run(Thread.java:764) Line 8922: 2,1000,05.16.2022_09.09.00.910,Info,Current Error Code = 0
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Answer
any other way we can handle this without try and catch?
You need to parse it with the right parse method so that the exception is not thrown.
value can be any thing.
Well if that is literally true, it means that you cannot parse it, except the most trivial sense.
it’s not fixed that it will always be float.it can be integer and double too.
Ah … so when you said “any thing” you didn’t mean anything?
There are three possible ways to handle this:
Just read the error code as a string, and don’t attempt to parse it.
Ask yourself: do you actually need to treat the error code as a number? What does that buy you? And what if the error code isn’t a recognizable number at all? (Will your application be able to cope?)
Parse the error code using
parseDouble, and represent it as adouble. The syntax parsed byparseDoubleis the same as forparseFloatand a superset of what is accepted byparseInt. Specifically,parseDoublewill happily parse an integer value … and give you thedoublerepresentation of that integer.The downside is that for large enough integers, the
doublerepresentation will be imprecise / inaccurate. Depending on the actual code values, this might cause problems.If you must parse it with the right type then the way you avoid try / catch would be to use
Patternto implement regexes to test which of the expected formats the error code is in. Then call the correspondingparseXXXmethod to parse it.The downside is that you now need three (or more) different variables with types
int,float,doubleand so on to represent the parsed error code values. And all of the places where you used the error code later in your application will have to deal with that.And of course, you could just use a sequence try-catches.