二叉树模型代码

package test;


public class tree2 {
    private int data;
    private tree2 lChild;
    private tree2 rChild;

    public int getNodes){
        return this.lChild == null ? 0 :
                this.lChild.getNodes ) )
                +  this.rChild == null
                ? 0 : this.rChild.getNodes ) ) + 1;
    }
    public int sum){
        return  this.lChild == null ? 0 :
                this.lChild.sum ) )
                +  this.rChild == null ? 0 :
                this.rChild.sum ) ) + this.data;
    }

    public void fTraverse ) {
        System.out.print this.data+" " );
        if this.lChild != null ) {
            this.lChild.fTraverse );
        }
        if this.rChild != null ) {
            this.rChild.fTraverse );
        }
    }
    public void mTraverse ) {
        if this.lChild != null ) {
            this.lChild.mTraverse );
        }
        System.out.print this.data+" " );
        if this.rChild != null ) {
            this.rChild.mTraverse );
        }
    }
    public void lTraverse ) {
        if this.lChild != null ) {
            this.lChild.lTraverse );
        }
        if this.rChild != null ) {
            this.rChild.lTraverse );
        }
        System.out.print this.data+" " );
    }

    public void addNodetree2 node ) {
        if  node.data< this.data ) {
            if  this.lChild == null ) {
                this.lChild = node;
            } else {
                this.lChild.addNode node );
            }
        }else ifnode.data> this.data){
            if  this.rChild == null ) {
                this.rChild = node;
            } else {
                this.rChild.addNode node );
            }
        }

    }
    public tree2int data) {
        this.data = data;
    }

    public int getData) {
        return data;
    }

    public void setDataint data) {
        this.data = data;
    }

    public tree2 getlChild) {
        return lChild;
    }

    public void setlChildtree2 lChild) {
        this.lChild = lChild;
    }

    public tree2 getrChild) {
        return rChild;
    }

    public void setrChildtree2 rChild) {
        this.rChild = rChild;
    }
}