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单选题
Which layout manager is used when the frame is resized the buttons’s position in the Frame might be changed？（）
A
BorderLayout
B
FlowLayout
C
CardLayout
D
GridLayout
参考答案
参考解析
解析：
A：该布局管理器将容器划分为五个部分，容器大小的改变不会影响其中的组件的位置而是影响他们的大小。
B：该布局管理器根据放入其中的组件的最合适大小调整组件的位置，根据组件放入的顺序安排，一行不能容纳时放入下一行，因此容器的大小改变可能改变组件的位置。
C://该布局管理器显示放入该容器的当前页中的组件，一次显示一个，容器大小的改变不能影响其中组件的位置。
D://该布局管理器将容器划分为固定的网格，组件加入后占据一个单元，各组件的相对位置不会因为容器的大小变化而变化，改变的只是组件的大小。
B：该布局管理器根据放入其中的组件的最合适大小调整组件的位置，根据组件放入的顺序安排，一行不能容纳时放入下一行，因此容器的大小改变可能改变组件的位置。
C://该布局管理器显示放入该容器的当前页中的组件，一次显示一个，容器大小的改变不能影响其中组件的位置。
D://该布局管理器将容器划分为固定的网格，组件加入后占据一个单元，各组件的相对位置不会因为容器的大小变化而变化，改变的只是组件的大小。
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East and West of BorderLayoutE
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填空题Write a line of code that declares a variable named layout of type LayoutManager and initializes it with a new object， which when used with a container can lay out components in a rectangular grid of equal-sized rectangles， 3 components wide and 2 components high.（）
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