Java ObjectStreamFiled getTypeString()方法

java.io.ObjectStreamField.getTypeString() 返回JVM类型签名。

1 语法

public String getTypeString()

2 参数

3 返回值

如果此字段具有原始类型,则此方法返回null。

4 示例 

package com.yiidian;

/**
 * 一点教程网: http://www.yiidian.com
 */
/**
 * java.io.ObjectStreamField.getTypeString()方法的例子
 */
import java.io.*;
import java.util.Calendar;

public class Demo {
    public static void main(String[] args) {

        // create a new object stream class for Integers
        ObjectStreamClass osc = ObjectStreamClass.lookup(Integer.class);

        // get the field value from Integer class
        ObjectStreamField field = osc.getField("value");

        // get the type string of the field
        System.out.println("" + field.getTypeString());

        // create a new object stream class for calendar
        ObjectStreamClass osc2 = ObjectStreamClass.lookup(Calendar.class);

        // get the field value from Calendar class
        ObjectStreamField field2 = osc2.getField("isSet");

        // get the type string of the field2
        System.out.println("" + field2.getTypeString());
    }
}

输出结果为:

null
[Z

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