1 Walking and stretching are good warm-up exercises. Stretching the muscles in the front and the back of the thighs is a good way to warm up the knees. 2  Make the leg muscles strong by doing certain exercises (for example, walking up stairs, riding a stationary bicycle, or working out with weights). Walking and stretching are good warm-up exercises. Stretching the muscles in the front and the back of the thighs is a good way to warm up the knees. 2  Make the leg muscles strong by doing certain exercises (for example, walking up stairs, riding a stationary bicycle, or working out with weights).
By the time the telephone came along, the Americans were saying âhulloâ to each other every day, so it was a short jump to âhelloâ. But it wasnât until the telephone was invented that âhelloâ emerged as a universal form of greeting and as a way of establishing contact.
String greeting = Hello world!; In this case, Hello world! is a string literalâa series of characters in your code that is enclosed in double quotes. Whenever it encounters a string literal in your code, the compiler creates a String object with its valueâin this case, Hello world!.