Example usage for org.apache.commons.lang ObjectUtils equals

Introduction

In this page you can find the example usage for org.apache.commons.lang ObjectUtils equals.

Prototype

public static boolean equals(Object object1, Object object2)

Source Link

Document

Compares two objects for equality, where either one or both objects may be null.

 ObjectUtils.equals(null, null)                  = true ObjectUtils.equals(null, "")                    = false ObjectUtils.equals("", null)                    = false ObjectUtils.equals("", "")                      = true ObjectUtils.equals(Boolean.TRUE, null)          = false ObjectUtils.equals(Boolean.TRUE, "true")        = false ObjectUtils.equals(Boolean.TRUE, Boolean.TRUE)  = true ObjectUtils.equals(Boolean.TRUE, Boolean.FALSE) = false

Usage

From source file:MainClass.java

public static void main(String[] args) {
    //Create ObjectUtilsTrial instance
    MyClass one = new MyClass();
    MyClass two = one; //Same Reference
    MyClass three = new MyClass(); //New Object
    MyClass four = null;/*from   w  w  w. j  a v  a 2s  . c  om*/

    //one and two point to the same object
    System.out.print("2) References to the same object >>>");
    System.out.println(ObjectUtils.equals(one, two));

}

From source file:MainClass.java

public static void main(String[] args) {
    //Create ObjectUtilsTrial instance
    MyClass one = new MyClass();
    MyClass two = one; //Same Reference
    MyClass three = new MyClass(); //New Object
    MyClass four = null;/*from www  . jav  a  2s . c  o m*/

    //one and three are different objects
    System.out.print("3) Check object references and not values >>>");
    System.out.println(ObjectUtils.equals(one, three));
}

From source file:ObjectUtilsTrial.java

public static void main(String[] args) {
    // Create ObjectUtilsTrial instance
    String one = new String();
    String two = one; // Same Reference
    String three = new String(); // New Object
    String four = null;//from   w  w w . ja v a2  s. c  o m

    // four is null, returns DEFAULT
    System.out.print("1) If null return DEFAULT >>>");
    System.out.println(ObjectUtils.defaultIfNull(four, "DEFAULT"));

    // one and two point to the same object
    System.out.print("2) References to the same object >>>");
    System.out.println(ObjectUtils.equals(one, two));

    // one and three are different objects
    System.out.print("3) Check object references and not values >>>");
    System.out.println(ObjectUtils.equals(one, three));

    // toString method gets called
    System.out.print("4) toSring gets invoked >>>");
    System.out.println(one);

    // Object details displayed..toString is not called
    System.out.print("5) Display object details >>>");
    System.out.println(ObjectUtils.identityToString(one));

    // Pass null get empty string
    System.out.print("6) Pass null and get back an Empty string >>>");
    System.out.println("**" + ObjectUtils.toString(null) + "**");
}

From source file:com.haulmont.cuba.core.entity.LockDescriptorNameType.java

public static LockDescriptorNameType fromId(String id) {
    for (LockDescriptorNameType type : LockDescriptorNameType.values()) {
        if (ObjectUtils.equals(id, type.getId()))
            return type;
    }/* w  w w  . j  a  v  a2s .c  o  m*/
    return null; // unknown id
}

From source file:com.dianping.lion.util.EnumUtils.java

/**
 * ?property??// w w w .  jav a  2s.  c  o  m
 * @param <T>
 * @param enumClass
 * @param property
 * @param propValue
 * @return
 */
public static <T extends Enum<T>> T fromEnumProperty(Class<T> enumClass, String property, Object propValue) {
    T[] enumConstants = enumClass.getEnumConstants();
    for (T t : enumConstants) {
        Object constantPropValue;
        try {
            constantPropValue = BeanUtils.getDeclaredFieldValue(t, property);
            if (ObjectUtils.equals(constantPropValue, propValue)) {
                return t;
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    return null;

}

From source file:com.haulmont.cuba.security.entity.ConstraintOperationType.java

public static ConstraintOperationType fromId(String id) {
    for (ConstraintOperationType area : ConstraintOperationType.values()) {
        if (ObjectUtils.equals(id, area.getId()))
            return area;
    }//from w w w .j  ava2s  . c o  m
    return null; // unknown id
}

From source file:com.haulmont.cuba.security.entity.ConstraintCheckType.java

public static ConstraintCheckType fromId(String id) {
    for (ConstraintCheckType type : ConstraintCheckType.values()) {
        if (ObjectUtils.equals(id, type.getId()))
            return type;
    }//from  w  w  w .ja  va 2 s .  co  m
    return null; // unknown id
}

From source file:com.haulmont.cuba.gui.app.security.entity.PermissionVariant.java

public static PermissionVariant fromId(Integer id) {
    for (PermissionVariant variant : PermissionVariant.values()) {
        if (ObjectUtils.equals(variant.getId(), id)) {
            return variant;
        }/*ww w .j  ava 2 s.  c  o  m*/
    }
    return null;
}

From source file:com.haulmont.cuba.gui.app.security.entity.UiPermissionVariant.java

public static UiPermissionVariant fromId(Integer id) {
    for (UiPermissionVariant variant : UiPermissionVariant.values()) {
        if (ObjectUtils.equals(variant.getId(), id)) {
            return variant;
        }// w  w  w  .j a va  2s  . c o m
    }
    return null;
}

From source file:com.haulmont.cuba.gui.app.security.entity.AttributePermissionVariant.java

public static AttributePermissionVariant fromId(Integer id) {
    for (AttributePermissionVariant variant : AttributePermissionVariant.values()) {
        if (ObjectUtils.equals(variant.getId(), id)) {
            return variant;
        }/* ww  w .  j  a v  a2 s.com*/
    }
    return null;
}