What is the function of tostring method in java

The function of the tostring method in Java is to return a [text representation] string of this object. The result is a concise but easy-to-read information expression.

The role of the tostring method in java is

The toString method will return a "text representation" of this object String. The result is a concise yet easy-to-read expression of information. It is recommended that all subclasses override this method.

The toString method of the Object class returns a string, which consists of the class name (the object is an instance of this class), the at tag "@" and the unsigned hexadecimal hash code of this object The system represents the composition. In other words, this method returns a string whose value is equal to:

getClass().getName()+'@'+Integer.toHexString(hashCode())；

Returns: the string representation of the object

Because it is a method that already exists in Object, and All classes inherit Object, so "all objects have this method";

It is usually just for convenience of output, such as System.out.println(xx), the " in brackets xx" If it is not a String type, the toString() method of xx will be automatically called;

In short, it is just a special purpose designed to facilitate string operations of all classes when Sun developed Java. One way to join.

Extended information

tostring的使用示例
publicclassOrc
{
publicstaticclassA
{
publicStringtoString()
{
return"thisisA";
}
}
publicstaticvoidmain(String[]args)
{
Aobj=newA();
System.out.println(obj);
}
}

Related learning recommendations: Java video tutorial

##

The above is the detailed content of What is the function of tostring method in java. For more information, please follow other related articles on the PHP Chinese website!