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Hi, I'm new to this Java world, and just can't figure out this problem. After I use nextInt or nextDouble, and try to use nextLine, it won't work unless I put nextLine twice. What's the problem there, and what would be the good way to handle this? Just gave a … 
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I am working on a program that should convert between in, ft, mi, mm, cm, m, and km. The question is: Write a unit conversion program that asks users to identify the unit from which they want to convert and the unit to which they want to convert. Legal units … 
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Hello everyone , I'm trying to update an existing Excel file(.xls) and add some rows in it . I already can open an xls and display it in a jTable, but i want to add rows to a specific sheet that i choose in a combobox . My xls have … 
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what is th use of converting an array list into an array ?
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