class ComplexTest {
	public double re; 
	public double im; 
	
	public void ComplexTest(){
		re=0.;
		im=0.;
	}
	
	public void Add(ComplexTest other){
		this.re=this.re+other.re;
		this.im=this.im+other.im;
	}
	
	public void Mult2(){
		this.Add(this);
	}
	
	public double[] ArrFn() {
		double [] arr1=new double[5];
		int i;
		for(i=0;i<5;i++){
			arr1[i]=10.*i;
		}
		return arr1;
	}

	public static void main(String[] argv){
		ComplexTest test1=new ComplexTest();
		double[] at;
		
		test1.re=2.;
		test1.im=1.;
		
		test1.Mult2();
		
		System.out.println("re:"+test1.re+" im:"+test1.im);
		at=test1.ArrFn();
		for(int i=0;i<5;i++){
			System.out.println("i="+i+"; "+at[i]);
		}
	}

}

/* output: 
re:4.0 im:2.0
i=0; 0.0
i=1; 10.0
i=2; 20.0
i=3; 30.0
i=4; 40.0
*/