在Java语 言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。A、North或SouthB、East或WestC、CenterD、North,South或CenterE、任何区域
在Java语 言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。
- A、North或South
- B、East或West
- C、Center
- D、North,South或Center
- E、任何区域
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在Java语言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。 A.North或SouthB.East或WestC.CenterD.North,South或CenterE.任何区域
本题中,主窗口有一个按钮、一个文本域和一个复选按钮,初始时窗口的大小是不能调整的,选中复选按钮后,窗口大小就可以进行调整,如果撤销复选按钮的选择,则窗口的大小又不能调整,单击按钮可以关闭程序。 import java.awt.*; import java.awt.event.*; class MyFrame. extends Frame {Checkbox box; TextArea text; Button button; MyFrame(String s) {super(s); box=new Checkbox("设置窗口是否可调整大 小"); text=new TextArea(12,12); button=new Button("关闭窗口"); button.addActionListener(this); box.addltemListener(this); setBounds(100,100,200,300); setVisible(true); add(text,BorderLayout.CENTER); add(box.BorderLayout.SOUTH); add(button.BorderLayout.NORTH); ; validate; } public void itemStateChanged(ItemEVent e) {if(box.getState= =true) {setResizable(true); } else { setResizable(false); } } public void actionPerformed(ActionEvent e) {dispose; } } class java2 {public static void main(String args[]) { new MyFrame("java2"); } }
定义枚举如下:publicenumDirection{EAST,SOUTH,WEST,NORTH}下列正确使用该枚举类型的语句是哪项?() A.DirectionDirection=EAST;B.Directiondirection=Direction.WEST;C.inta-Direction.NORTH;D.Directiondirection=2;
classNav{11.publicenumDirection{NORTH,SOUTH,EAST,WEST}12.}13.publicclassSprite{14.//insertcodehere15.}Whichcode,insertedatline14,allowstheSpriteclasstocompile?() A.Directiond=NORTH;B.Nav.Directiond=NORTH;C.Directiond=Direction.NORTH;D.Nav.Directiond=Nav.Direction.NORTH;
importjava.awt.*;publicclassXextendsFrame{publicstaticvoidmain(Stringargs){Xx=newX();x.pack();x.setVisible(true);}publicX(){setLayout(newBordrLayout());Panelp=newPanel();add(p,BorderLayout.NORTH);Buttonb=newButton(North”);p.add(b):Buttonb=newButton(South”);add(b1,BorderLayout.SOUTH):}}Whichtwostatementsaretrue?()A.Thebuttonslabeled“North”and“South”willhavethesamewidth.B.Thebuttonslabeled“North”and“South”willhavethesameheight.C.Theheightofthebuttonlabeled“North”canveryiftheFrameisresized.D.Theheightofthebuttonlabeled“South”canveryiftheFrameisresized.E.Thewidthofthebuttonlabeled“North”isconstanteveniftheFrameisresized.F.Thewidthofthebuttonlabeled“South”isconstanteveniftheFrameisresized.
请将下列程序的空白处补充完整。Importjava.awt.*;PublicclassEll_4{Publicstaticvoidmain(Stringargs[]){Framef=newFrame(“BorderLayout”);fiadd(“North”,newbuRon(“North”));f.add(“East”,newbutton(“East”));f.add(“West”,newbutton(“West”));f.add(“South”,tf);f.setSize(200,200)fipack();fisetVisible(true);}}
下列程序在Frame中设定BorderLayout布局管理器,选择正确的语句填入程序的横线处。 import java.awt.*; public class ex43 extends Frame { public static void main(String[] args) { ex43 bj = new ex43("BorderLayout"); ______ obj.add("North", new Button("North")); obj.add("South", new Button("Sourth")); obj.add("East", new Button ("East")); obj.add("West", new Button ("West")); obj. add ("Center", new Button ( "Center" ) ); obj.pack(); obj. setVisible (true); } public ex43(String str) { super (str); } }A.obj.setLayout(new BorderLayout());B.setLayout(new Borderkayout());C.setLayout(BorderLayout());D.obj.setLayout(BorderLayout());
使用______位置参数,能够使一个部件位于容器的右边。A.BorderLayout.RIGHTB.BorderLayout.WESTC.BonierLayout.EASTD.BorderLayout.NORTH
The general circulation of the surface water in Mediterranean is ______.A.counter-clockwiseB.clockwiseC.from east to westD.from north to south
The surface currents of the South Atlantic,South Pacific and South Indian Ocean follow,in general,a regular pattern of ______.A.counter-clockwise circulationB.clockwise circulationC.trend from east to westD.trend from north to south
If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you, what winds can you expect in the Southern Hemisphere? ______.A.South-southwesterlyB.North-northwesterlyC.South-southeasterlyD.North-northeasterly
If the center of low pressure is due west of you in the Northern Hemisphere, which wind direction should you expect?A.South to westB.South to eastC.West to northD.North to east
In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the ______.A.south to eastB.north to westC.north to eastD.south to west
In the Northern Hemisphere, if the center of a high pressure area is due west of you, what wind direction would you expect?______.A.South to westB.South to eastC.North to westD.North to east
Tasmania is an island which lies()of the Australian mainland.A、north of the northeastern cornerB、south of the southeastern cornerC、east of the northeastern comerD、west of the southeastern corner
在Java语言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。 A、North或SouthB、East或WestC、CenterD、North, South 或CenterE、任何区域
class Parent { String one, two; public Parent(String a, String b){ one = a; two = b; } public void print(){ System.out.println(one); } } public class Child extends Parent { public Child(String a, String b){ super(a,b); } public void print(){ System.out.println(one + " to " + two); } public static void main(String arg[]){ Parent p = new Parent("south", "north"); Parent t = new Child("east", "west"); p.print(); t.print(); } } Which of the following is correct?()A、 Cause error during compilation. B、 south east C、 south to north east to west D、 south to north east E、 south east to west
在Java语言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。(选择一项)。A、North或SouthB、East或WestC、CenterD、North,South或Center
New Zealand is situated about 1, 500 km ()A、north-west of AustraliaB、south-east of AustraliaC、north-east of AustraliaD、south-west of Australia
在应用程序窗体中,若想定位按钮,且使按钮的大小随窗体变化而变化,可以使用的布局有()。A、FlowLayoutB、GridLayoutC、BorderLayout的center区域D、BorderLayout的East或West区域E、BorderLayout的North或South区域
import java.awt.*; public class X extends Frame { public static void main (String args) { X x = new X(); x.pack(); x.setVisible(true); } public X() { setLayout (new BordrLayout()); Panel p = new Panel (); add(p, BorderLayout.NORTH); Button b = new Button (“North”); p.add(b): Button b = new Button (“South”); add(b1, BorderLayout.SOUTH): } } Which two statements are true?()A、 The buttons labeled “North” and “South” will have the same width.B、 The buttons labeled “North” and “South” will have the same height.C、 The height of the button labeled “North” can very if the Frame is resized.D、 The height of the button labeled “South” can very if the Frame is resized.E、 The width of the button labeled “North” is constant even if the Frame is resized.F、 The width of the button labeled “South” is constant even if the Frame is resized.
如果java.awt.Containerc的布局为BorderLayout,则c.add(newJbutton())的默认位置参数是()A、BorderLayout.EASTB、BorderLayout.WESTC、BorderLayout.CENTERD、编译错误
定义枚举如下: public enum Direction{ EAST,SOUTH,WEST,NORTH } 下列正确使用该枚举类型的语句是哪项?() A、Direction Direction=EAST;B、Direction direction=Direction.WEST;C、int a- Direction.NORTH;D、Direction direction=2;
单选题在Java语言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。(选择一项)。ANorth或SouthBEast或WestCCenterDNorth,South或Center
多选题在应用程序窗体中,若想定位按钮,且使按钮的大小随窗体变化而变化,可以使用的布局有()。AFlowLayoutBGridLayoutCBorderLayout的center区域DBorderLayout的East或West区域EBorderLayout的North或South区域
单选题在Java语言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。ANorth或SouthBEast或WestCCenterDNorth, South 或CenterE任何区域
单选题在Java语 言中,把组件放在BorderLayout的()区域时,它会自动垂直调整大小,但不是水平调整。ANorth或SouthBEast或WestCCenterDNorth,South或CenterE任何区域