如何修复机器人ArithmeticException错误 [英] how to fix ArithmeticException error in android

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问题描述

其实我不知道问题出在哪里is.I认为它必须在创建TableLayout。 我不知道如何来修正错误,使应用程序的工作。 该程序显示错误java.lang.ArithmeticException:被零除错误 该方案具有的EditText(edText),它要求用户输入。 其类型是数字(这里r是从edText的值) 下方的EditText有一个按钮(BT),这显示edText值。 下面的按钮(BT),另外还有一个按钮(BT1),这再次显示了edText价值。 此按钮也必须显示R行的EditText上的观点,即4列,用户必须的EditText输入r * 4的输入数据。 我不能清除错误,我不知道如何清除这个错误。

 公共类Ybus_Activity延伸活动{
    INT I;
    @覆盖
    公共无效的onCreate(包savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_ybus);
        最后的LayoutParams PARAMS =新的LayoutParams(LayoutParams.MATCH_PARENT,
                LayoutParams.WRAP_CONTENT);
        最后的LinearLayout主要=(的LinearLayout)findViewById(R.id.android_main_layout);
        TextView中的getData =新的TextView(本);
        getData.setText(输入LineData的数目:);
        getData.setId(5);
        getData.setLayoutParams(PARAMS);
        main.addView(的getData);
        最后的EditText edText =新的EditText(本);
        edText.setId(3);
        edText.setLayoutParams(PARAMS);
        edText.setWidth(100);
        edText.setImeOptions(EditorInfo.IME_ACTION_NEXT);
        edText.setInputType(InputType.TYPE_CLASS_NUMBER);
        edText.setKeyListener(DigitsKeyListener.getInstance());
        edText.setMaxLines(1);
        main.addView(edText);
        按钮BT =新的按钮(这一点);
        bt.setText(点击进入Linedata);
        bt.setLayoutParams(新的LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));
        main.addView(BT);
        最后的TextView文本=新的TextView(本);
        bt.setOnClickListener(新View.OnClickListener()
        {
            公共无效的onClick(视图v)
            {
                。字符串ED = edText.getText()的toString();

                尝试{
                    我=的Integer.parseInt(ED);
                    //这里设定值
                    text.setText第(i +);
                    //或者你可以像这样
                    //text.setText(String.valueOf(i));
                }赶上(NumberFormatException的前){
                    text.setText(在TextView中值不是一个有效的整数);
                }
            }
        });
        main.addView(文本);
        最后的TextView文本2 =新的TextView(本);
        两个按钮=新的按钮(这一点);
        two.setText(二);
        main.addView(二);
        main.addView(文本2);
        two.setOnClickListener(新OnClickListener()
        {
            @覆盖
            公共无效的onClick(视图v){
                text2.setText(将String.valueOf(一));
                main.addView(createTL(ⅰ,getBaseContext()));
                的System.out.println(+ I);
            }

        });
    }
    公共静态TableLayout createTL(INT读,上下文语境)
    {
        INT C = 4;
        的LayoutParams PARAMS =新

                的LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
        TableLayout TL =新TableLayout(上下文);
        tl.setLayoutParams(新TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,TableRow.LayoutParams.WRAP_CONTENT));
        tl.setStretchAllColumns(真正的);
        的TableRow [] TR =新的TableRow [R]。
        的EditText [] []等=新的EditText [R] [C]。
        的for(int i = 0; I< R;我++)
        {
            的System.out.println(行我所谓的+ I);
            TR [i] =新的TableRow(上下文);
            为(诠释J = 0; J&4;; J ++)
            {
                等[I] [J] =新的EditText(上下文);
                等[I] [J] .setText(o.oo);
                等[I] [J] .setLayoutParams(PARAMS);
                等[I] [j]的.setWidth(100);
                等[I] [J] .setImeOptions(EditorInfo.IME_ACTION_NEXT);
                等[I] [J] .setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);
                等[I] [J] .setKeyListener(DigitsKeyListener.getInstance());
                等[I] [j]的.setMaxLines(1);
                的System.out.println(EditText上创建+ I + J);
                TR [I] .addView(等[I] [J]);
                的System.out.println(TR创建+ I);
            }
            tl.addView(TR [I]);
            的System.out.println(TLL创建+ I);
        }
        返回TL;
    }
}
 

我的logcat的:

 十二月2日至23号:56:36.147:我/的System.out(1742):行我called0
一十二月2号至23号:56:36.155:我/的System.out(1742):的EditText是created00
一十二月2号至23号:56:36.155:我/的System.out(1742):Tr为0创建
一十二月2号至23号:56:36.186:我/的System.out(1742):的EditText是created01
一十二月2号至23号:56:36.186:我/的System.out(1742):Tr为0创建
一十二月2号至23号:56:36.195:我/的System.out(1742):的EditText是created02
一十二月2号至23号:56:36.206:我/的System.out(1742):Tr为0创建
一十二月2号至23号:56:36.206:我/的System.out(1742):的EditText是created03
一十二月2号至23号:56:36.215:我/的System.out(1742):Tr为0创建
一十二月2号至23号:56:36.225:我/的System.out(1742):TLL是0创建
一十二月2号至23号:56:36.225:我/的System.out(1742):行我called1
一十二月2号至23号:56:36.235:我/的System.out(1742):的EditText是created10
一十二月2号至23号:56:36.235:我/的System.out(1742):Tr为created1
一十二月2号至23号:56:36.245:我/的System.out(1742):的EditText是created11
一十二月2号至23号:56:36.245:我/的System.out(1742):Tr为created1
一十二月2号至23号:56:36.265:我/的System.out(1742):的EditText是created12
一十二月2号至23号:56:36.265:我/的System.out(1742):Tr为created1
一十二月2号至23号:56:36.275:我/的System.out(1742):的EditText是created13
一十二月2号至23号:56:36.275:我/的System.out(1742):Tr为created1
一十二月2号至23号:56:36.275:我/的System.out(1742):TLL是created1
一十二月2号至23号:56:36.285:我/的System.out(1742):2
一十二月2号至23号:56:36.285:D / AndroidRuntime(1742):关闭虚拟机
一十二月2号至23号:56:36.285:W / dalvikvm(1742):主题ID = 1:螺纹退出与未捕获的异常(组= 0xb2f97288)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):致命异常:主要
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):java.lang.ArithmeticException:被零除
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.TableLayout.mutateColumnsWidth(TableLayout.java:583)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.TableLayout.shrinkAndStretchColumns(TableLayout.java:572)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.TableLayout.measureVertical(TableLayout.java:470)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.TableLayout.onMeasure(TableLayout.java:435)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.View.measure(View.java:15172)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.View.measure(View.java:15172)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.View.measure(View.java:15172)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.LinearLayout.measureVertical(LinearLayout.java:833)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.View.measure(View.java:15172)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在com.android.internal.policy.impl.PhoneWindow $ DecorView.onMeasure(PhoneWindow.java:2148)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.View.measure(View.java:15172)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.ViewRootImpl $ TraversalRunnable.run(ViewRootImpl.java:4212)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:725)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.Choreographer.doCallbacks(Choreographer.java:555)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.Choreographer.doFrame(Choreographer.java:525)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:711)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.os.Handler.handleCallback(Handler.java:615)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.os.Handler.dispatchMessage(Handler.java:92)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.os.Looper.loop(Looper.java:137)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在android.app.ActivityThread.main(ActivityThread.java:4745)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在java.lang.reflect.Method.invokeNative(本机方法)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在java.lang.reflect.Method.invoke(Method.java:511)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:786)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
一十二月2号至23号:56:36.305:E / AndroidRuntime(1742):在dalvik.system.NativeStart.main(本机方法)
一十二月2号至23号:56:36.425:D / dalvikvm(1742):GC_CONCURRENT释放162K,免费3%11001K / 11271K,暂停24ms + 27ms,总107ms
 

解决方案

这行code导致错误。这是我参照这个链接后理解

  INT C = 4;
的LayoutParams PARAMS =新的LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT); //这是导致错误
tl.setStretchAllColumns(真正的);
 

您需要将其更改为

  TableRow.LayoutParams PARAMS =新TableRow.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
 

Actually i dont know where the problem is.I think that it must be in creating TableLayout. I dont know how to fix the error and make the app to work. This program shows the error "java.lang.ArithmeticException : divide by zero" error The program has EditText(edText) which asks for input from user. Its type is NUMBER.(here r is the value from edText) Below the EditText there is a Button(bt) which displays the edText value. Below the button (bt) there is another Button(bt1) which again displays the edText Value. This button must also displays r rows and 4 columns of EditText views i.e, user must enter r*4 input data in EditText. I cant clear the error and i dont know how to clear that error.

public class Ybus_Activity extends Activity {
    int i;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_ybus);
        final LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT,
                LayoutParams.WRAP_CONTENT);
        final LinearLayout main = (LinearLayout)findViewById(R.id.android_main_layout);
        TextView getData=new TextView(this);
        getData.setText("Enter the number of LineData : ");
        getData.setId(5);
        getData.setLayoutParams(params);
        main.addView(getData);
        final EditText edText = new EditText(this);
        edText.setId(3);
        edText.setLayoutParams(params);
        edText.setWidth(100);
        edText.setImeOptions(EditorInfo.IME_ACTION_NEXT);
        edText.setInputType(InputType.TYPE_CLASS_NUMBER);
        edText.setKeyListener(DigitsKeyListener.getInstance());
        edText.setMaxLines(1);
        main.addView(edText );
        Button bt = new Button(this);
        bt.setText("Click to enter Linedata");
        bt.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
        main.addView(bt);
        final TextView text = new TextView(this);
        bt.setOnClickListener(new View.OnClickListener() 
        { 
            public void onClick(View v) 
            {
                String ed=edText.getText().toString(); 

                try{
                    i =Integer.parseInt(ed);
                    //setting value here
                    text.setText(i+"");
                    //or you can do like this
                    //text.setText(String.valueOf(i));
                }catch(NumberFormatException ex){
                    text.setText("Value at TextView is not a valid integer");
                }
            }
        });
        main.addView(text);
        final TextView text2 = new TextView(this);
        Button two = new Button(this);
        two.setText("Second");
        main.addView(two);
        main.addView(text2);
        two.setOnClickListener(new OnClickListener()
        {
            @Override
            public void onClick(View v) {
                text2.setText(String.valueOf(i));
                main.addView(createTL(i,getBaseContext()));
                System.out.println(+i);
            }

        });
    }
    public static TableLayout createTL(int r, Context context)
    {
        int c=4;
        LayoutParams params = new 

                LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
        TableLayout tl = new TableLayout(context);
        tl.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,TableRow.LayoutParams.WRAP_CONTENT));
        tl.setStretchAllColumns(true);
        TableRow[] tr = new TableRow[r];
        EditText[][] et = new EditText[r][c];
        for(int i=0;i<r;i++)
        {
            System.out.println("line i called" + i);
            tr[i] = new TableRow(context);
            for(int j=0;j<4;j++)
            {
                et[i][j] = new EditText(context);
                et[i][j].setText("o.oo");
                et[i][j].setLayoutParams(params);
                et[i][j].setWidth(100);
                et[i][j].setImeOptions(EditorInfo.IME_ACTION_NEXT);
                et[i][j].setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);
                et[i][j].setKeyListener(DigitsKeyListener.getInstance());
                et[i][j].setMaxLines(1);
                System.out.println("EditText is created" + i  + j);
                tr[i].addView(et[i][j]);
                System.out.println("Tr is created" + i);
            }
            tl.addView(tr[i]);
            System.out.println("TLL is created" + i);
        }
        return tl;
    }
}

My Logcat :

02-23 12:56:36.147: I/System.out(1742): line i called0
02-23 12:56:36.155: I/System.out(1742): EditText is created00
02-23 12:56:36.155: I/System.out(1742): Tr is created0
02-23 12:56:36.186: I/System.out(1742): EditText is created01
02-23 12:56:36.186: I/System.out(1742): Tr is created0
02-23 12:56:36.195: I/System.out(1742): EditText is created02
02-23 12:56:36.206: I/System.out(1742): Tr is created0
02-23 12:56:36.206: I/System.out(1742): EditText is created03
02-23 12:56:36.215: I/System.out(1742): Tr is created0
02-23 12:56:36.225: I/System.out(1742): TLL is created0
02-23 12:56:36.225: I/System.out(1742): line i called1
02-23 12:56:36.235: I/System.out(1742): EditText is created10
02-23 12:56:36.235: I/System.out(1742): Tr is created1
02-23 12:56:36.245: I/System.out(1742): EditText is created11
02-23 12:56:36.245: I/System.out(1742): Tr is created1
02-23 12:56:36.265: I/System.out(1742): EditText is created12
02-23 12:56:36.265: I/System.out(1742): Tr is created1
02-23 12:56:36.275: I/System.out(1742): EditText is created13
02-23 12:56:36.275: I/System.out(1742): Tr is created1
02-23 12:56:36.275: I/System.out(1742): TLL is created1
02-23 12:56:36.285: I/System.out(1742): 2
02-23 12:56:36.285: D/AndroidRuntime(1742): Shutting down VM
02-23 12:56:36.285: W/dalvikvm(1742): threadid=1: thread exiting with uncaught exception (group=0xb2f97288)
02-23 12:56:36.305: E/AndroidRuntime(1742): FATAL EXCEPTION: main
02-23 12:56:36.305: E/AndroidRuntime(1742): java.lang.ArithmeticException: divide by zero
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.TableLayout.mutateColumnsWidth(TableLayout.java:583)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.TableLayout.shrinkAndStretchColumns(TableLayout.java:572)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.TableLayout.measureVertical(TableLayout.java:470)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.TableLayout.onMeasure(TableLayout.java:435)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.View.measure(View.java:15172)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.View.measure(View.java:15172)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.View.measure(View.java:15172)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:833)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.View.measure(View.java:15172)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.View.measure(View.java:15172)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.Choreographer.doCallbacks(Choreographer.java:555)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.Choreographer.doFrame(Choreographer.java:525)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.os.Handler.handleCallback(Handler.java:615)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.os.Handler.dispatchMessage(Handler.java:92)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.os.Looper.loop(Looper.java:137)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at android.app.ActivityThread.main(ActivityThread.java:4745)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at java.lang.reflect.Method.invokeNative(Native Method)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at java.lang.reflect.Method.invoke(Method.java:511)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-23 12:56:36.305: E/AndroidRuntime(1742):     at dalvik.system.NativeStart.main(Native Method)
02-23 12:56:36.425: D/dalvikvm(1742): GC_CONCURRENT freed 162K, 3% free 11001K/11271K, paused 24ms+27ms, total 107ms

解决方案

This line of code is causing the error. This is what I understood after referring to this link

int c=4;
LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT); //this is causing the error
tl.setStretchAllColumns(true);

You need to change it to

TableRow.LayoutParams params = new TableRow.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);

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