Java Utililty Methods Object Compare

List of utility methods to do Object Compare

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Description

The list of methods to do Object Compare are organized into topic(s).

Method

booleanareEqual(final Object first, final Object second)
are Equal 
return first.equals(second);
booleanareEqual(final Object o1, final Object o2)
Determines equality of the supplied objects by delegating to their hashCode methods. 
if (o1 == null) {
    return o2 == null;
return o2 != null && (o1 == o2 || o1.getClass() == o2.getClass() && o1.hashCode() == o2.hashCode());
booleanareEqual(final Object object0, final Object object1)
Whether two objects are equal, without throwing a null pointer exception. 
if ((object0 == null) && (object1 == null)) {
    return true;
if ((object0 == null) || (object1 == null)) {
    return false;
return object0.equals(object1);
booleanareEqual(final Object x, final Object y)
Returns true if the given objects are equal, namely, they are both null or they are equal by the equals() method. 
return x == null ? y == null : x.equals(y);
booleanareEqual(final T object1, final T object2)
Null safe comparison of instances, especially numerics like Integer. 
if (object1 == object2) {
    return true;
if (object1 == null || object2 == null) {
    return false;
if (object1.equals(object2)) {
    return true;
...
booleanareEqual(Object aThis, Object aThat)
Equals for possibly-null object field. 
if (isArray(aThis) || isArray(aThat)) {
    throw new IllegalArgumentException("This method does not currently support arrays.");
return aThis == null ? aThat == null : aThis.equals(aThat);
booleanareEqual(Object first, Object second)
Compares two objects. 
if (first == second) {
    return true;
} else {
    if (first != null && second != null) {
        return first.equals(second);
    return false;
booleanareEqual(Object first, Object second, boolean equalEvenIfBothNull)
are Equal 
return (equalEvenIfBothNull ? areEqualEvenIfBothNull(first, second) : areEqual(first, second));
booleanareEqual(Object o1, Object o2)
are Equal 
return o1 == null ? o2 == null : o1.equals(o2);
booleanareEqual(Object o1, Object o2)
are Equal 
return !(o1 == null || o2 == null || !o1.equals(o2));