OOP 2 Rectangle

package putin;

public class rectangle {
    private int ix1, iy1, ix2, iy2;
    public rectangle(){}
    public rectangle(int x1, int y1,int x2, int y2) {
        this.ix1 = x1;
        this.iy2 = y2;
        this.ix2 = x2;
        this.iy2 = y2;
    }
    public int getix1(){
        return ix1;
    }
    public int getiy1(){
        return iy1;
    }
    public int getix2(){
        return ix2;
    }
    public int getiy2(){
        return iy2;
    }
    public int calcArea(){
        return Math.abs((ix2-ix1)*(iy2-iy1));
    }

    public int compareTo(Object r){
        if(this.calcArea()<((rectangle)r).calcArea())
        return -1;
        if(this.calcArea()>((rectangle)r).calcArea())
        return 1;
        return 0;
    }
    public String toString(){
        return "x1:"+ix1+";y1:"+iy1+";x2:"+ix2+";y2:"+iy2;
    }
    public boolean equals(rectangle r){
        return this.calcArea()==r.calcArea();
    }
    public void translateX(int iPoints){
        ix1 = ix1 + iPoints;
        ix2 += iPoints;
    }
    public void translateY(int iPoints){
        iy1 = iy2 + iPoints;
        iy2 += iPoints;
    }
    public void translateXY(int iPoints){
        translateX (iPoints);
        translateY (iPoints);
    }
    public boolean isInside(int ptx, int pty){
        if(ix1<ptx && ix2>ptx && iy1 < pty && iy2>pty){
            return true;}
        else {
            return false; }
    }
    public rectangle unionRect(rectangle r){
        int x1 = Math.min(ix1,r.ix1);
        int y1 = Math.min(iy1,r.iy1);
        int x2 = Math.max(ix2,r.ix2);
        int y2 = Math.max(iy2,r.iy2);
        rectangle current = new rectangle (x1, y1, x2, y2);
        return current;
    }
    public static void main (String[] args){
        rectangle r1= new rectangle(5,5,12,12);
        rectangle r2 = new rectangle(4,4,2,2);
        System.out.println("r1:" + r1.toString());
        System.out.println("r2:" + r2.toString());
    }
    if(r1.equal(r2)){
        System.out.println("Areas are equal");
    }
    else {
        System.out.println("Areas aren't equal");
    }
    rectangle r3=r1.unionRect(r2);
    System.out.println("r3:"+r3.toString());
}
}
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