求解，编译总是遇到错误（如下）

Question

public ComplexNumber(){
    this.m_dRealPart = 0;
    this.m_dlmaginPart = 0;
}    
public ComplexNumber(double r,double i){
    this.m_dRealPart = r;
    this.m_dlmaginPart = i;
}    
public double getRealPart(){
    return m_dRealPart;
}    
public double getlmaginPart(){
    return m_dlmaginPart;
}
public void setRealPart(double d){
    this.m_dRealPart = d;
}    
public void setmaginaryPart(double d){
    this.m_dlmaginPart = d;
}
public void complexConjugate(){
    this.m_dlmaginPart = -this.m_dlmaginPart ;
}
public void complexAdd(ComplexNumber c){
    this.m_dRealPart = this.m_dRealPart + c.m_dRealPart;
    this.m_dlmaginPart  = this.m_dlmaginPart + c.m_dlmaginPart;
}
public void complexAdd(double c){
    this.m_dRealPart=c + this.m_dRealPart;
}
public void complexMinus(ComplexNumber c){
    this.m_dRealPart=this.m_dRealPart - c.m_dRealPart;
    this.m_dlmaginPart= this.m_dlmaginPart - c.m_dlmaginPart;
}
public void complexMinus(double c){
    this.m_dRealPart=this.m_dRealPart - c;
}
public void complexMulti(ComplexNumber c){
    this.m_dRealPart =this.m_dRealPart * c.m_dRealPart-this.m_dlmaginPart * c.m_dlmaginPart;
    this.m_dlmaginPart=this.m_dRealPart*c.m_dlmaginPart+this.m_dlmaginPart*c.m_dRealPart;
}
public void complexMulti(double c){
    this.m_dRealPart =this.m_dRealPart * c;
    this.m_dlmaginPart=this.m_dlmaginPart*c;
}
public void complexDivide(ComplexNumber c){
    this.m_dRealPart=(this.m_dRealPart * c.m_dRealPart-this.m_dlmaginPart * c.m_dlmaginPart)/(c.m_dRealPart*c.m_dRealPart+ c.m_dlmaginPart* c.m_dlmaginPart);
    this.m_dlmaginPart=(this.m_dlmaginPart*c.m_dRealPart-this.m_dRealPart*c.m_dlmaginPart)/(c.m_dRealPart*c.m_dRealPart+ c.m_dlmaginPart* c.m_dlmaginPart);
}
public void complexDivide(double c){
    this.m_dRealPart =(this.m_dRealPart * c)/(c*c);
    this.m_dlmaginPart=(this.m_dlmaginPart*c)/(c*c);
}
public String toString(){
    return (this.m_dRealPart + " + "+this.m_dlmaginPart+"i");
}

}

Answer 1

ComplexNumber com1 = new ComplexNumber();
ComplexNumber com2 = new ComplexNumber();
com1 .complexAdd(com2 );//类似这样调用