📜  Java中的向量 toString() 方法与示例

📅  最后修改于: 2022-05-13 01:55:19.308000             🧑  作者: Mango

Java中的向量 toString() 方法与示例

Java.util.Vector.toString() 是 Vector 的内置方法,用于获取 Vector 对象的字符串表示形式,其形式为由“,”分隔的条目的字符串表示形式。所以基本上 toString() 方法用于将 Vector 的所有元素转换为 String。
句法:

Vector.toString()

参数:该方法不带任何参数。
返回值:该方法返回由 Vector 元素的字符串表示形式组成的字符串表示形式。
下面的程序说明了Java.util.Vector.toString() 方法的工作:
方案一:

Java
// Java code to illustrate the toString() method
 
import java.util.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // creating vector type object
        Vector vector = new Vector();
 
        // Inserting elements into the table
        vector.add("Geeks");
        vector.add("4");
        vector.add("Geeks");
        vector.add("Welcomes");
        vector.add("You");
 
        // Displaying the Vector
        System.out.println("Vector: " + vector);
 
        // Displaying the string representation
        System.out.println("The String representation is: "
                           + vector.toString());
    }
}


Java
// Java code to illustrate the toString() method
import java.util.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // Creating an empty Vector
        Vector vector
            = new Vector();
 
        // Inserting elements into the table
        vector.add(10);
        vector.add(15);
        vector.add(20);
        vector.add(25);
        vector.add(30);
 
        // Displaying the Vector
        System.out.println("Initial Vector is: " + vector);
 
        // Displaying the string representation
        System.out.println("The String representation is: "
                           + vector.toString());
    }
}


输出:
Vector: [Geeks, 4, Geeks, Welcomes, You]
The String representation is: [Geeks, 4, Geeks, Welcomes, You]

方案二:

Java

// Java code to illustrate the toString() method
import java.util.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // Creating an empty Vector
        Vector vector
            = new Vector();
 
        // Inserting elements into the table
        vector.add(10);
        vector.add(15);
        vector.add(20);
        vector.add(25);
        vector.add(30);
 
        // Displaying the Vector
        System.out.println("Initial Vector is: " + vector);
 
        // Displaying the string representation
        System.out.println("The String representation is: "
                           + vector.toString());
    }
}
输出:
Initial Vector is: [10, 15, 20, 25, 30]
The String representation is: [10, 15, 20, 25, 30]