数组-JAVA

public class Array {public static void main(String[] args) {int a[]={1,2,3,4};int b[]={100,200,300};System.out.println("数组a的元素个数="+a.length);System.out.println("数组b的元素个数="+b.length);System.out.println("数组a的引用="+a);System.out.println("数组b的引用="+b);a=b;System.out.println("数组a的元素个数="+a.length);System.out.println("数组b的元素个数="+b.length);System.out.println("a[0]="+a[0]+",a[1]="+a[1]+",a[2]="+a[2]);System.out.println("b[0]="+b[0]+",b[1]="+b[1]+",b[2]="+b[2]);}}