我正在重写equals方法来比较两个对象,因为我想比较它的所有字段。如果两个对象不相等,有没有办法找出哪些字段是不相等的,因为对象不相等?
答案 0 :(得分:0)
创建类来存储这样的字段信息(或使用Map
):
class FieldsContainer<F,V>{
private F field;
private V value;
public FieldsContainer(F field, V value) {
this.field = field;
this.value = value;
}
public FieldsContainer(){}
public F getField() {
return field;
}
public void setField(F field) {
this.field = field;
}
public V getValue() {
return value;
}
public void setValue(V value) {
this.value = value;
}
}
然后在equals()中:
public boolean equals(Object obj) {
...
} else if (!field1.equals(other.field1)){
fieldsContainer=new FieldsContainer("fieldName1", field1);
return false;
}
if (field2 != other.field2){
fieldsContainer=new FieldsContainer("fieldName2", field2);
return false;
}
fieldsContainer=null;
return true;
}
并在主要:
if(!obj1.equals(obj2)){
fieldsContainer.getField();
fieldsContainer.getValue();
//Your stuff
}