Example usage for java.lang Object equals

Introduction

In this page you can find the example usage for java.lang Object equals.

Prototype

public boolean equals(Object obj)

Source Link

Document

Indicates whether some other object is "equal to" this one.

Usage

From source file:Main.java

public static boolean equal(Object a, Object b) {
    return a == b || (a != null && a.equals(b));
}

From source file:Main.java

/** Returns true if all elements of c match obj */
public static boolean all(Collection c, Object obj) {
    for (Iterator iterator = c.iterator(); iterator.hasNext();) {
        Object o = iterator.next();
        if (!o.equals(obj))
            return false;
    }//from   w ww.ja v  a  2  s .  c  o  m
    return true;
}

From source file:Main.java

public static boolean contains(Object[] arr, Object obj) {
    for (int i = 0; i < arr.length; i++) {
        Object object = arr[i];
        if (object.equals(obj)) {
            return true;
        }/*from   w w w .  j  av a  2 s .c om*/
    }
    return false;
}

From source file:Main.java

public static int Cardinality(Object obj, Collection coll) {
    if (coll == null) {
        throw new NullPointerException();
    }/*from  w  w  w  .  j av a  2  s . co m*/
    if (obj == null) {
        throw new NullPointerException();
    }
    for (Object o : coll) {
        if (o.equals(obj)) {
            total++;
        }
    }
    return total;
}

From source file:Main.java

/**
 * Find the index of a value inside an array. If not found, or any of the param is null, return -1
 * @param array The array to lookup the value (if null, return -1)
 * @param value The value to lookup (if null, return -1)
 * @return the index of the match value, or -1 is not found
 *///from   w ww.jav  a  2s  .  c om
public static int findIndex(Object[] array, Object value) {
    if (array == null || value == null) {
        return -1;
    }
    int i = 0;
    for (Object obj : array) {
        if (obj.equals(value)) {
            return i;
        }
        i++;
    }
    return -1;
}

From source file:Main.java

public static boolean isNullOrBlank(Object value) {
    if (null == value || value.equals("")) {
        return true;
    } else {//  w w w .  ja  v  a  2s .com
        return false;
    }
}

From source file:Main.java

public static boolean isEquals(Object a, Object b) {
    return (a == null) ? (b == null) : a.equals(b);
}

From source file:Main.java

public static boolean remove(Collection collection, Object object) {
    boolean removed = false;
    Iterator it = collection.iterator();
    while (it.hasNext()) {
        Object o = it.next();
        if (o.equals(object)) {
            removed = true;//from   w ww  .  j a v a 2 s .  c o  m
            it.remove();
            break;
        }
    }

    return removed;
}

From source file:Main.java

/**
 * Null-safe equivalent of {@code a.equals(b)}.
 *
 * @see java.util.Objects#equals/*from  w w  w . j a  va2s.  c  o m*/
 */
public static boolean bothNullOrEqual(Object a, Object b) {
    return a == null ? b == null : a.equals(b);
}

From source file:Main.java

public static boolean equals(Object a, Object b) {
    return (a == b) || (a != null && a.equals(b));
}