Java数组

最新推荐文章于 2019-04-11 10:20:35 发布

原创最新推荐文章于 2019-04-11 10:20:35 发布 · 697 阅读

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#java #string #import #float #byte #class

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本文深入探讨了Java中不同数组类型的定义、赋值及内存分配特性，包括基本数据类型数组、引用类型数组以及字符串数组的使用场景和区别。

import java.util.Arrays;
public class lzwCode{	
	public static void main(String [] args) {
		int [] arrA = new int[]{1,2,3,4,5}; //在java中数组也是对象
		int [] arrB = {1,2,3,4,5};

		int [] arrC = new int[5];     //(32)21 4748 3647
		long [] arrD = new long[5];   //(64)
		byte [] arrE = new byte[5];   //(8)127
		short [] arrL = new short[5]; //(16)32767 
		
		float [] arrF = new float[5]; //(32)
		double [] arrG = new double[5];//(64)

		char [] arrH = new char[5];//(16)

		String [] arrJ = new String[5];
		boolean [] arrK = new boolean[5]; //(8)
		System.out.println(Arrays.toString(arrA));
		System.out.println(Arrays.toString(arrB));
		System.out.println("====================================");
		System.out.println(Arrays.toString(arrC));
		System.out.println(Arrays.toString(arrD));
		System.out.println(Arrays.toString(arrE));
		System.out.println(Arrays.toString(arrL));
		System.out.println("====================================");
		System.out.println(Arrays.toString(arrF));
		System.out.println(Arrays.toString(arrG));
		System.out.println("====================================");
		System.out.println(Arrays.toString(arrH));
		System.out.println("====================================");
		System.out.println(Arrays.toString(arrJ));
		System.out.println(Arrays.toString(arrK));
    }  
}

控制台结果：

import java.util.Arrays;
public class lzwCode {

	public static void main(String [] args) {
		//数组之间的赋值是引用赋值,没有申请新的存储空间
		int [] a = {1,2,3,4,5};
		System.out.println(Arrays.toString(a));
		int [] b;
		b = a;
		b[1] = 20; //占用一块存储空间的首地址、长度等
		System.out.println(Arrays.toString(b));
		System.out.println(Arrays.toString(a));
	}
}

控制台结果：