JNI GetFieldID属性类型的判断

例如：

public class INFO {  
    short backup_type;      //备份的方式 
    int intervel;     
    String reserved_char;   //保留字符，留作以后扩展  
      
    INFO() {  
        backup_type = 0;  
        intervel = 0;  
        reserved_char =  null;  
    }  
}  

1、 进入INFO所在目录 

2、用javac INFO.java进行编译

3、输入命令：javap –s INFO

1. Compiled from "INFO.java"  
   public class com.android.myjni.INFO extends java.lang.Object{  
   short backup_type;  
     Signature: S  
   int intervel;  
     Signature: I  
   java.lang.String reserved_char;  
     Signature: Ljava/lang/String;  
   com.android.myjni.INFO();  
     Signature: ()V  
   } 

   
   
2.  如下即可知道要用什么类型转换