arraysdemo.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 41 行

package chapter9;

import java.util.*;

public class ArraysDemo {

	public static void main(String[] args) {

		int[] arrs = { 3, 93, 343, 34, 22, 55, 44, 67, 89, 0 };
		for (int i = 0; i < arrs.length; i++)
			System.out.println("before arrs is " + arrs[i]);
		// sort static method
		Arrays.sort(arrs, 3, 6);

		for (int i = 0; i < arrs.length; i++)
			System.out.println("after arrs at " + i + " is " + arrs[i]);
		// binarySearch static method
		int index = Arrays.binarySearch(arrs, 55);
		System.out.println("the 55 at " + index);

		Arrays.sort(arrs);
		for (int i = 0; i < arrs.length; i++)
			System.out.println("now arrs at " + i + " is " + arrs[i]);

		// String array
		String[] arrStr = new String[8];
		for (int i = 0; i < 8; i++) {
			arrStr[i] = new String(String.valueOf(i));
		}
		// asList static method
		List<String> listarr = Arrays.asList(arrStr);

		Iterator<String> iter = listarr.iterator();
		for (; iter.hasNext();) {
			System.out.println("the element is " + iter.next());
		}

	}

}