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java Programming Glossary: fieldSorting an ArrayList of Contacts based on name? [duplicate] http://stackoverflow.com/questions/1814095/sorting-an-arraylist-of-contacts-based-on-name contactArray which is a separate class which contains four fields name home number mobile number and address. So I was looking.. Object private String getter public BeanComparator String field this.getter get field.substring 0 1 .toUpperCase field.substring.. getter public BeanComparator String field this.getter get field.substring 0 1 .toUpperCase field.substring 1 public int compare..
How to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet select a file for upload you need a HTML input type file field in the form. As stated in the HTML specification you have to.. item items if item.isFormField Process regular form field input type text radio checkbox etc select etc . String fieldname.. input type text radio checkbox etc select etc . String fieldname item.getFieldName String fieldvalue item.getString .....
Avoiding “!= null” statements in Java? http://stackoverflow.com/questions/271526/avoiding-null-statements-in-java the necessity to test every object if you want to access a field or method of this object. For example ... if someobject null..
What is a serialVersionUID and why should I use it? http://stackoverflow.com/questions/285793/what-is-a-serialversionuid-and-why-should-i-use-it class Foo does not declare a static final serialVersionUID field of type long What is serialVersionUID and why is it important.. declare its own serialVersionUID explicitly by declaring a field named serialVersionUID that must be static final and of type.. only to the immediately declaring class serialVersionUID fields are not useful as inherited members. share improve this answer..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog . This is an example code declare the dialog as a member field of your activity ProgressDialog mProgressDialog instantiate..
Change private static final field using Java reflection http://stackoverflow.com/questions/3301635/change-private-static-final-field-using-java-reflection private static final field using Java reflection I have a class with a private static.. reflection I have a class with a private static final field that unfortunately I need to change at run time. Using reflection.. Can not set static final boolean field Is there any way to change the value Field hack WarpTransform2D.class.getDeclaredField..
What's the proper way to test a class with private methods using JUnit? http://stackoverflow.com/questions/34571/whats-the-proper-way-to-test-a-class-with-private-methods-using-junit do pretty much anything related to the private methods and fields. Of course you can't change private static final variables.. true return method.invoke targetObject argObjects And for fields Field field targetClass.getDeclaredField fieldName field.setAccessible.. method.invoke targetObject argObjects And for fields Field field targetClass.getDeclaredField fieldName field.setAccessible true..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser public Channel setItems null setTitle null set every field to null in the constructor public void setItems Items items..
Calling awt Frame methods from subclass http://stackoverflow.com/questions/5665156/calling-awt-frame-methods-from-subclass test.ExampleFrame PApplet provides a public field for setting and accessing your frame object. And amazingly it..
Creating a memory leak with Java http://stackoverflow.com/questions/6470651/creating-a-memory-leak-with-java byte 1000000 stores a strong reference to it in a static field and then stores a reference to itself in a ThreadLocal. Allocating..
What is an efficient way to implement a singleton pattern in Java? http://stackoverflow.com/questions/70689/what-is-an-efficient-way-to-implement-a-singleton-pattern-in-java This approach is functionally equivalent to the public field approach except that it is more concise provides the serialization..
Why is char[] preferred over String for passwords? http://stackoverflow.com/questions/8881291/why-is-char-preferred-over-string-for-passwords preferred over String for passwords In Swing the password field has a getPassword returns char method instead of the usual getText..
JTable duplicate values in row http://stackoverflow.com/questions/9132987/jtable-duplicate-values-in-row on closer inspection by simply println ing the 'data' field the data model isn't at fault it holds correct data in the format..
How do I read a private field in Java? http://stackoverflow.com/questions/1196192/how-do-i-read-a-private-field-in-java the class's declared fields and then make them accessible Field f obj.getClass .getDeclaredField stuffIWant NoSuchFieldException.. then make them accessible Field f obj.getClass .getDeclaredField stuffIWant NoSuchFieldException f.setAccessible true Hashtable.. Field f obj.getClass .getDeclaredField stuffIWant NoSuchFieldException f.setAccessible true Hashtable iWantThis Hashtable..
Is it possible in Java to access private fields via reflection [duplicate] http://stackoverflow.com/questions/1555658/is-it-possible-in-java-to-access-private-fields-via-reflection you've got the appropriate security permissions. Use Field.setAccessible true first if you're accessing it from a different.. normally throws Exception Other t new Other t.setStr hi Field field Other.class.getDeclaredField str field.setAccessible true.. t new Other t.setStr hi Field field Other.class.getDeclaredField str field.setAccessible true Object value field.get t System.out.println..
Get generic type of java.util.List http://stackoverflow.com/questions/1942644/get-generic-type-of-java-util-list help of reflection package test import java.lang.reflect.Field import java.lang.reflect.ParameterizedType import java.util.ArrayList.. public static void main String... args throws Exception Field stringListField Test.class.getDeclaredField stringList ParameterizedType.. void main String... args throws Exception Field stringListField Test.class.getDeclaredField stringList ParameterizedType stringListType..
Instance variable initialization in java http://stackoverflow.com/questions/1994218/instance-variable-initialization-in-java A Check Sun's explanation and advice From this tutorial Field declarations however are not part of any method so they cannot..
How to limit setAccessible to only “legitimate” uses? http://stackoverflow.com/questions/2481862/how-to-limit-setaccessible-to-only-legitimate-uses public class EverythingIsTrue static void setFinalStatic Field field Object newValue throws Exception field.setAccessible true.. Object newValue throws Exception field.setAccessible true Field modifiersField Field.class.getDeclaredField modifiers modifiersField.setAccessible.. throws Exception field.setAccessible true Field modifiersField Field.class.getDeclaredField modifiers modifiersField.setAccessible..
Simple popup java form with at least two fields http://stackoverflow.com/questions/3002787/simple-popup-java-form-with-at-least-two-fields to show a popup form that should have at least two JTextFields and two JLabels so using JOptionPane.showInputDialog is not.. Three Four Five JComboBox combo new JComboBox items JTextField field1 new JTextField 1234.56 JTextField field2 new JTextField.. combo new JComboBox items JTextField field1 new JTextField 1234.56 JTextField field2 new JTextField 9876.54 JPanel panel..
Change private static final field using Java reflection http://stackoverflow.com/questions/3301635/change-private-static-final-field-using-java-reflection final boolean field Is there any way to change the value Field hack WarpTransform2D.class.getDeclaredField USE_HACK hack.setAccessible.. the value Field hack WarpTransform2D.class.getDeclaredField USE_HACK hack.setAccessible true hack.set null true java reflection.. public class EverythingIsTrue static void setFinalStatic Field field Object newValue throws Exception field.setAccessible true..
What's the proper way to test a class with private methods using JUnit? http://stackoverflow.com/questions/34571/whats-the-proper-way-to-test-a-class-with-private-methods-using-junit method.invoke targetObject argObjects And for fields Field field targetClass.getDeclaredField fieldName field.setAccessible.. And for fields Field field targetClass.getDeclaredField fieldName field.setAccessible true field.set object value Notes.. private methods. The same thing applies for getDeclaredField . The setAccessible true is required to play around with privates...
How to create dynamic JSF 1.2 form fields http://stackoverflow.com/questions/3510614/how-to-create-dynamic-jsf-1-2-form-fields needs to be presented. So I created this custom DynamicField.java that has all the information we need. @Data lombok annotation.. annotation generating boilerplate code public class DynamicField String label label of the field String fieldKey some key to.. can be input radio selectbox etc So we have a List DynamicField . I want to iterate through this list and populate the form..
Why does this go into an infinite loop? http://stackoverflow.com/questions/3831341/why-does-this-go-into-an-infinite-loop 22 7 iload_1 8 iinc 1 1 11 istore_1 12 getstatic #2 Field java lang System.out Ljava io PrintStream 15 iload_1 16 invokevirtual..
http://stackoverflow.com/questions/6093537/for-loop-optimization java util List.size I 17 if_icmpge 34 20 getstatic #5 Field java lang System.out Ljava io PrintStream 23 ldc #6 String hi.. 17 iload_3 18 iload_2 19 if_icmpge 36 22 getstatic #5 Field java lang System.out Ljava io PrintStream 25 ldc #6 String hi..
Dynamically Add Components to a JDialog http://stackoverflow.com/questions/6988317/dynamically-add-components-to-a-jdialog it to look like this Then when the user clicks Add New Field I want it to look like this I cannot seem to get the dialog.. seem to get the dialog to add the new JLabel or JTextField. Can anyone point me in the right direction EDIT This is the.. right direction EDIT This is the action for the Add New Field button Just trying a label now . @Action public void addNewField..
@Inject to pass params to a CDI @Named bean via URL gives Jboss error on Netbeans http://stackoverflow.com/questions/10058852/inject-to-pass-params-to-a-cdi-named-bean-via-url-gives-jboss-error-on-netbean @Qualifier @Retention RUNTIME @Target METHOD FIELD PARAMETER TYPE public @interface HttpParam public String value.. @Qualifier @Retention RUNTIME @Target TYPE METHOD FIELD PARAMETER public @interface HttpParam public String value default..
Pointcut matching methods with annotated parameters http://stackoverflow.com/questions/3565718/pointcut-matching-methods-with-annotated-parameters standard imports stripped @Documented @Target FIELD CONSTRUCTOR PARAMETER @Retention RUNTIME public @interface @MyAnnotationForParam..
Why are annotations under Android such a performance issue (slow)? http://stackoverflow.com/questions/7417426/why-are-annotations-under-android-such-a-performance-issue-slow Log.i test in System.currentTimeMillis before ms @Target FIELD @Retention RUNTIME private static @interface MyAnnotation String..
How to create a custom validator in Play Framework 2.0? http://stackoverflow.com/questions/8115106/how-to-create-a-custom-validator-in-play-framework-2-0 import javax.validation. @Target FIELD @Retention RUNTIME @Constraint validatedBy AllUpperCaseValidator.class..
Fastest way to iterate over all the chars in a String http://stackoverflow.com/questions/8894258/fastest-way-to-iterate-over-all-the-chars-in-a-string if c ' ' doThrow return data.length field1 FANCY OBTAIN FIELD FOR ACCESS TO THE STRING'S INTERNAL char int fieldMethod1 final.. if c ' ' doThrow return data.length FANCY OBTAIN FIELD FOR ACCESS TO THE STRING'S INTERNAL CHAR int fieldMethod1 final..
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