Java Object Equal equals(Object v1, Object v2)

Description

equals

License

Open Source License

Declaration

public static boolean equals(Object v1, Object v2) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.List;
import java.util.Map;

public class Main {
    public static boolean equals(Object v1, Object v2) {
        boolean rval = true;
        // TODO Auto-generated method stub
        if (v1 instanceof List && v2 instanceof List) {
            if (((List) v1).size() != ((List) v2).size()) {
                rval = false;//  ww  w  . j  a  v a  2 s  .  c  om
            } else {
                // TODO: should the order of things in the list matter?
                for (int i = 0; i < ((List<Object>) v1).size() && rval == true; i++) {
                    rval = equals(((List<Object>) v1).get(i), ((List<Object>) v2).get(i));
                }
            }
        } else if (v1 instanceof Number && v2 instanceof Number) {
            // TODO: this is VERY sketchy
            double n1 = ((Number) v1).doubleValue();
            double n2 = ((Number) v2).doubleValue();

            rval = n1 == n2;
        } else if (v1 instanceof String && v2 instanceof String) {
            rval = ((String) v1).equals((String) v2);
        } else if (v1 instanceof Map && v2 instanceof Map) {
            if (((Map) v1).size() != ((Map) v2).size()) {
                rval = false;
            } else {
                for (Object k1 : ((Map) v1).keySet()) {
                    rval = ((Map) v2).containsKey(k1) ? equals(((Map) v1).get(k1), ((Map) v2).get(k1)) : false;
                    if (rval != true) {
                        break;
                    }
                }
            }
        } else if (v1 instanceof Boolean && v2 instanceof Boolean) {
            rval = v1 == v2;
        } else if (v1 != null && v2 != null) {
            rval = v1.equals(v2);
        } else {
            rval = v1 == v2;
        }

        return rval;
    }
}

Related

1. equals(Object o1, Object o2)
2. equals(Object o1, Object o2)
3. equals(Object o1, Object o2)
4. equals(Object object1, Object object2)
5. equals(Object thisObj, Object thatObj)
6. equals(Object x, Object y)
7. equals(Object... objects)
8. internalEquals(Object[] o1, Object[] o2)
9. isEquals(final Object lhs, final Object rhs)