It will differ based on the screen size. If your screen size is 240*320, it will show only 4 tabs. If your screen size is 320*240, it will show all 6 tabs.
You can do it in only one way by using buttons.
int tabsCount = 6;
Button btnOne = new Button(" Tab 1 ");
btnOne.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
Button btnTwo = new Button(" Tab 2 ");
btnTwo.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
Button btnThree = new Button(" Tab 3 ");
btnThree.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
Button btnFour = new Button(" Tab 4 ");
btnFour.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
Button btnFive = new Button(" Tab 5 ");
btnFive.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
Button btnSix = new Button(" Tab 6 ");
btnSix.setPreferredW(Display.getInstance().getDisplayWidth()/tabsCount);
tabs.addTab(btnOne, new Label("Tab one selected"));
tabs.addTab(btnTwo, new Label("Tab Two selected"));
tabs.addTab(btnThree, new Label("Tab three selected"));
tabs.addTab(btnFour, new Label("Tab four selected"));
tabs.addTab(btnFive, new Label("Tab five selected"));
tabs.addTab(btnSix, new Label("Tab six selected"));
It won't display the text of the button fully in small screens. But, when that tab is focused that title will be displayed as ticker.