javax.naming.CompositeName类的remove()方法用于从此组合名称中移除位于位置posn的组件。位置posn作为参数传递给此方法。此方法将删除此复合名称对象在“ posn”位置的组成部分,并将位于“ posn”以上的位置的组成部分向下移动一位。对象的大小减小1。
用法:
public Object remove(int posn) throws InvalidNameException
参数:此方法接受posn,这是要删除的组件的索引。必须在[0,size())范围内。
返回值:此方法返回删除的组件(字符串)。
异常:如果posn超出指定范围(包括复合名称为空的情况),则此方法引发ArrayIndexOutOfBoundsException;如果删除组件将违反复合名称的语法,则抛出InvalidNameException。
下面的程序说明CompositeName.remove()方法:
程序1:
// Java program to demonstrate
// CompositeName.remove()
import java.util.Properties;
import javax.naming.CompositeName;
import javax.naming.InvalidNameException;
public class GFG {
public static void main(String[] args)
throws InvalidNameException
{
// create composite name object
CompositeName CompositeName1
= new CompositeName(
"a/b/d/e/g/h/j/k/l");
// apply remove()
String removedComponent
= (String)
CompositeName1.remove(5);
// print value
System.out.println(
"Removed Component:"
+ removedComponent);
System.out.println(
"CompositeName After removal:"
+ CompositeName1);
}
}
输出:
Removed Component:h CompositeName After removal:a/b/d/e/g/j/k/l
程序2:
// Java program to demonstrate
// CompositeName.remove() method
import java.util.Properties;
import javax.naming.CompositeName;
import javax.naming.InvalidNameException;
public class GFG {
public static void main(String[] args)
throws InvalidNameException
{
// create composite name object
CompositeName CompositeName1
= new CompositeName(
"aa/bb/cc/dd/ee/ff/gg/hh");
// apply remove()
String removedComponent1
= (String)
CompositeName1.remove(1);
// print value
System.out.println("Removed Component:"
+ removedComponent1);
System.out.println("CompositeName After removal:"
+ CompositeName1);
// again remove component
String removedComponent2
= (String)
CompositeName1.remove(2);
// print results
System.out.println(
"Removed Component:"
+ removedComponent2);
System.out.println(
"CompositeName After removal:"
+ CompositeName1);
}
}
输出:
Removed Component:bb CompositeName After removal:aa/cc/dd/ee/ff/gg/hh Removed Component:dd CompositeName After removal:aa/cc/ee/ff/gg/hh
参考文献:https://docs.oracle.com/javase/10/docs/api/javax/naming/CompositeName.html#remove(int)
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