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What is the usage of toString() method in java

王林
王林Original
2020-05-25 14:42:265933browse

What is the usage of toString() method in java

The toString() method in java is used to return a Number object value represented by a string.

If this method uses a native data type as a parameter, it returns a String object value of the native data type.

If this method takes two parameters, returns the string representation of the first parameter in the base specified by the second parameter.

(Video tutorial recommendation: java video)

Grammar format:

Taking the String class as an example, this method has the following syntax formats:

String toString()
static String toString(int i)

toString(): Returns a String object representing an Integer value.

toString(int i): Returns a String object representing the specified int.

public class Test{    
    public static void main(String args[]){    
        Integer x = 5;    
        System.out.println(x.toString());          
        System.out.println(Integer.toString(12));     
    }
}

The output result is:

5
12

Recommended tutorial: Introduction to java development

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