public final class moInfoReg
implements java.io.Serializable{
public String sourNumber="";
public String destNumber="";
public String ywCode="";
public moInfoReg(){}
public String toString()
{
String theReturn = ""; theReturn += "sourNumber=" + sourNumber + "\n";
theReturn += "destNumber=" + destNumber + "\n";
theReturn += "ywCode=" + ywCode + "\n";
return theReturn;
}
}
在调用destNumber时出现:
java.lang.NullPointerException
implements java.io.Serializable{
public String sourNumber="";
public String destNumber="";
public String ywCode="";
public moInfoReg(){}
public String toString()
{
String theReturn = ""; theReturn += "sourNumber=" + sourNumber + "\n";
theReturn += "destNumber=" + destNumber + "\n";
theReturn += "ywCode=" + ywCode + "\n";
return theReturn;
}
}
在调用destNumber时出现:
java.lang.NullPointerException
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还有你少一个{
还有你说什么调用destNumber??
你是怎么调用的??
public String sourNumber = ""; public String destNumber = ""; public String ywCode = ""; public moInfoReg() {
} public String toString() {
String theReturn = ""; theReturn += "sourNumber=" + sourNumber + "\n";
theReturn += "destNumber=" + destNumber + "\n";
theReturn += "ywCode=" + ywCode + "\n";
return theReturn;
} public static void main(String[] args) {
moInfoReg m=new moInfoReg();
System.out.println(m);
}}
结果是
sourNumber=
destNumber=
ywCode=
没有提示出错啊,你是怎么调用的啊 >?