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CompoundName startsWith() method in Java with Examples

  • Last Updated : 27 Mar, 2020

The startsWith() method of a javax.naming.CompoundName class is used to check whether compound name which is passed as a parameter is a prefix of this compound name or not. A compound name ‘X’ is a prefix of this compound name if this compound name object ends with ‘X’. If X is null or not a compound name object, false is returned.

Syntax:

public boolean startsWith(Name n)

Parameters: This method accepts n which is the possibly null compound name to check.

Return value: This method returns true if n is a CompoundName and is a prefix of this compound name, false otherwise.

Below programs illustrate the CompoundName.startsWith() method:
Program 1:






// Java program to demonstrate
// CompoundName.startsWith()
  
import java.util.Properties;
import javax.naming.CompoundName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // need properties for CompoundName
        Properties props = new Properties();
        props.put("jndi.syntax.separator", ":");
        props.put("jndi.syntax.direction",
                  "left_to_right");
  
        // create compound name object
        CompoundName CompoundName1
            = new CompoundName(
                "1:2:4:6", props);
        CompoundName CompoundName2
            = new CompoundName(
                "2:4:6", props);
  
        // apply startsWith()
        boolean Flag
            = CompoundName1
                  .startsWith(CompoundName2);
  
        // print value
        if (Flag)
            System.out.println(
                "CompoundName1 starts with "
                + " CompoundName2");
        else
            System.out.println(
                "CompoundName1 not starts with "
                + " CompoundName2");
    }
}
Output:
CompoundName1 not starts with  CompoundName2

Program 2:




// Java program to demonstrate
// CompoundName.startsWith() method
  
import java.util.Properties;
import javax.naming.CompoundName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // need properties for CompoundName
        Properties props = new Properties();
        props.put("jndi.syntax.separator", "/");
        props.put("jndi.syntax.direction",
                  "left_to_right");
  
        // create compound name object
        CompoundName CompoundName1
            = new CompoundName(
                "c/e/d/v/a/b/z/y/x/f",
                props);
        CompoundName CompoundName2
            = new CompoundName(
                "c/e/d",
                props);
  
        // apply startsWith()
        boolean Flag
            = CompoundName1
                  .startsWith(CompoundName2);
  
        // print value
        if (Flag)
            System.out.println(
                "CompoundName1 starts with "
                + " CompoundName2");
        else
            System.out.println(
                "CompoundName1 not starts with "
                + " CompoundName2");
    }
}
Output:
CompoundName1 starts with  CompoundName2

References: https://docs.oracle.com/javase/10/docs/api/javax/naming/CompoundName.html#startsWith(javax.naming.Name)

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