Java startsWith () method

Java String class

startsWith () method is used to detect whether the string starts with the specified prefix.

grammar

public boolean startsWith(String prefix, int toffset)

或

public boolean startsWith(String prefix)

parameter

• prefix - the prefix.

• toffset - the string to start searching.

return value

If the string with the specified prefix beginning, returns true; otherwise false.

Examples

public class Test {
	public static void main(String args[]) {
        String Str = new String("www.w3big.com");

        System.out.print("返回值 :" );
        System.out.println(Str.startsWith("www") );

        System.out.print("返回值 :" );
        System.out.println(Str.startsWith("w3big") );

        System.out.print("返回值 :" );
        System.out.println(Str.startsWith("w3big", 4) );
	}
}

The above program execution results:

返回值 :true
返回值 :false
返回值 :true

Java String class