public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof TestClass)) return false; TestClass obj = (TestClass) o; return ((this.field1 == obj.getField1() || (this.field1 != null && this.field1.equals(obj.getField1()))) && (this.field2 == obj.getField2() || (this.field2 != null && this.field2.equals(obj.getField2()))) && (this.field3 == obj.getField3() || (this.field3 != null && this.field3.equals(obj.getField3())))); }