e1022. enabling and disabling multiple selections in a jtree component.txt

这里面包含了一百多个JAVA源文件

// Create tree
    JTree tree = new JTree();
    
    // Allow only a single node to be selected (default)
    tree.getSelectionModel().setSelectionMode(
        TreeSelectionModel.SINGLE_TREE_SELECTION);
    
    // Allow selection to span one vertical contiguous set of visible nodes
    tree.getSelectionModel().setSelectionMode(
        TreeSelectionModel.CONTIGUOUS_TREE_SELECTION);
    
    // Allow multiple selections of visible nodes
    tree.getSelectionModel().setSelectionMode(
        TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);