How to intercept the first digits of a string in java

In java, you can use the substring() method to intercept the first few digits of a string.

The substring() method returns the substring of a string.

Syntax:

public String substring(int beginIndex)

or

public String substring(int beginIndex, int endIndex)

Parameters:

beginIndex -- Starting index (inclusive), the index starts from 0.

endIndex -- End index (not included).

Return value

Substring.

Example:

public class Test {
    public static void main(String args[]) {
        String Str = new String("www.php.cn");
 
        System.out.print("返回值 :" );
        System.out.println(Str.substring(4) );
 
        System.out.print("返回值 :" );
        System.out.println(Str.substring(4, 10) );
    }
}

For more java knowledge, please pay attention to java basic tutorial.

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