int数组：
int[] ia = new int[2];System.out.println(ia[0]);System.out.println(ia[1]);
输出：
00
float数组：
float[] fa = new float[2];System.out.println(fa[0]);System.out.println(fa[1]);
输出：
0.00.0
double数组：
double[] da = new double[2];System.out.println(da[0]);System.out.println(da[1]);输出：
0.00.0
char数组：
char[] ca = new char[2];System.out.println( (int)ca[0] ); System.out.println( ca[0] ); // 空System.out.println( (int)ca[1] );System.out.println( ca[1] ); // 空输出：
00
对象数组：
package me.letian;public class HelloJava { static class User { private String name; public User() { this.name = "letian"; } public String toString() { return "Hi, I am " + this.name; } } public static void main(String[] args) { User[] users = new User[2]; System.out.println( users[0] ); System.out.println( users[1] ); users[0] = new User(); System.out.println( users[0] ); }} 或者：
package me.letian;public class HelloJava { class User { private String name; public User() { this.name = "letian"; } public String toString() { return "Hi, I am " + this.name; } } public static void main(String[] args) { HelloJava hj = new HelloJava(); User[] users = new User[2]; System.out.println( users[0] ); System.out.println( users[1] ); users[0] = hj.new User(); System.out.println( users[0] ); }}
运行结果：
nullnullHi, I am letian