ArrayInt

public class ArrayInt {
    public static void main(String [] args){
        stringEqual();
        arrayIntDot();
        System.out.println("--------------------------------------------------------------------------");
        arrayInt();
        System.out.println("--------------------------------------------------------------------------");
        arrayIntOne();
        System.out.println("--------------------------------------------------------------------------");
    }

    private static void stringEqual() {
        String str1=new String ("str");
        String str2=new String ("str");
        System.out.println(str1==str2);
        String str3="str";
        String str4="str";
        System.out.println(str3==str4);
    }

    private static void arrayIntDot() {
        String s="1,2,3,4;5,6,7,8;9,10,11,12,13";
        //以split()方法 分解
        String[] sFirst=s.split(";");
        String[][] word=new String[sFirst.length][];
        int flag=0;
        for(int i=0;i<sFirst.length;i++){
            String[] sSecond=sFirst[i].split(",");
            System.out.println("sSecond length:"+sSecond.length);
            word[i]=new String[sSecond.length];//这步确定行不规则数组的每行长度
            //为这个数组赋值
            for(int j=0;j<sSecond.length;j++){
                word[i][j]=sSecond[j];
            }
            System.out.println("---------------这是第"+(i+1)+"次循环-------------------");
        }
        //输出二维数组
        System.out.println("输出二维数组-------------------");
        for(int i=0;i<word.length;i++){
            for(int j=0;j<word[i].length;j++){

                System.out.print(word[i][j]+" ");
            }
            System.out.println();
        }
    }

    private static void arrayInt() {
        int [][] arrayTemp={{1,2,3,4},{5,6,7,8},{9,10,11,12}};
        for(int i=0;i< arrayTemp.length;i++){
            for (int j=0;j<arrayTemp[i].length;j++){
                System.out.println(arrayTemp[i][j]+" ");
            }
        }
    }

    public static void arrayIntOne(){
        //0  1 2 3可以不换行？
        int arrayTemp[][];
        arrayTemp=new int[3][];
        arrayTemp[0]=new int[4];
        arrayTemp[1]=new int[4];
        arrayTemp[2]=new int[4];
        for(int i=0;i< arrayTemp.length;i++){
            for (int j=0;j<arrayTemp[i].length;j++){
                arrayTemp[i][j]=j;
                System.out.println(arrayTemp[i][j]+" ");
            }
            System.out.println();
        }
    }
}