Java 随机。nextInt(1);只返回1

Java 随机。nextInt(1);只返回1,java,random,minecraft,Java,Random,Minecraft,这是我的minecraft mod算法。出于某种原因,似乎rand.nextInt(1)仅返回1。为什么? public void generate(){ Random rand = new Random(); Arrays.fill(wc,null); int c = generateCat();//Generates a int of 1-16 randomly int i = 0; int xi = 0; int x = getCoordX(

这是我的minecraft mod算法。出于某种原因,似乎
rand.nextInt(1)仅返回1。为什么?

public void generate(){
    Random rand = new Random();
    Arrays.fill(wc,null);
    int c = generateCat();//Generates a int of 1-16 randomly
    int i = 0;
    int xi = 0;
    int x = getCoordX();
    int y = getCoordY();
    int maxc = 0;
    boolean d1 = true;
    boolean d2 = false;
    boolean d3 = false;
    boolean d4 = false;
    boolean loop = true;

    wc[0] = new WeatherChunk(world,x,y,c);//Here the starting object is generated
    x=x-1;
    if(rand.nextInt(1)==1){//Here the c value (is supposed to have a 50% chance of reducing) But it never does EVER!?
        c=getHNChunkCat(x,y);
        c--;
        wc[1] = new WeatherChunk(world,x,y,c);//Here the c value (is supposed to have a 50% chance of reducing) But it never does EVER!?
    }else{
        c=getHNChunkCat(x,y);
        wc[1] = new WeatherChunk(world,x,y,c);
    }
    x=x+2;
    if(rand.nextInt(1)==1){
        c=getHNChunkCat(x,y);
        c--;
        wc[2] = new WeatherChunk(world,x,y,c);
    }else{
        c=getHNChunkCat(x,y);
        wc[2] = new WeatherChunk(world,x,y,c);
    }
    x=x-1;
    y++;

    if(rand.nextInt(1)==1){
        c=getHNChunkCat(x,y);
        c--;
        wc[3] = new WeatherChunk(world,x,y,c);
    }else{
        c=getHNChunkCat(x,y);
        wc[3] = new WeatherChunk(world,x,y,c);
    }
    y=y-2;
    if(rand.nextInt(1)==1){
        c=getHNChunkCat(x,y);
        c--;
        wc[4] = new WeatherChunk(world,x,y,c);
    }else{
        c=getHNChunkCat(x,y);
        wc[4] = new WeatherChunk(world,x,y,c);
    }
    y=wc[0].coordY;
    x=wc[0].coordX-2;
    i=5;

    while(loop){
                d1=true;
                while(d1){
                    if(chunkExists(x+1,y)){
                        if(getHNChunkCat(x,y)>maxc)maxc=getHNChunkCat(x,y);
                        if(rand.nextInt(1)==1){
                            c=getHNChunkCat(x,y);
                            c--;
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }else{
                            c=getHNChunkCat(x,y);
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }
                        x++;
                        y++;
                        i++;
                    }else{
                        d1=false;
                    }   
                }
                d2=true;
                while(d2){
                    if(chunkExists(x,y-1)){
                        if(getHNChunkCat(x,y)>maxc)maxc=getHNChunkCat(x,y);
                        if(rand.nextInt(1)==1){
                            c=getHNChunkCat(x,y);
                            c--;
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }else{
                            c=getHNChunkCat(x,y);
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }
                        x++;
                        y--;
                        i++;
                    }else{
                        d2=false;
                    }   
                }
                d3=true;
                while(d3){
                    if(chunkExists(x-1,y)){
                        if(getHNChunkCat(x,y)>maxc)maxc=getHNChunkCat(x,y);
                        if(rand.nextInt(1)==1){
                            c=getHNChunkCat(x,y);
                            c--;
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }else{
                            c=getHNChunkCat(x,y);
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }
                        x--;
                        y--;
                        i++;
                    }else{
                        d3=false;
                    }   
                }
                d4=true;
                while(d4){

                    if(chunkExists(x-1,y)){
                        if(getHNChunkCat(x,y)>maxc)maxc=getHNChunkCat(x,y);
                        if(rand.nextInt(1)==1){
                            c=getHNChunkCat(x,y);
                            c--;
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }else{
                            c=getHNChunkCat(x,y);
                            wc[i] = new WeatherChunk(world,x,y,c);
                        }
                        x--;
                        y++;
                        i++;
                        if(chunkExists(x,y)){
                        d4=false;
                        break;
                    }
                    }else{
                        d4=false;
                    }   
                }

                y=wc[0].coordY;
                x=wc[0].coordX;
                xi=0;

                while(true){
                    if(!chunkExists(x-xi,y)){
                        x=x-xi;
                        break;
                    }else{
                        xi++;
                    }
                }

                if(maxc==0){
                    loop=false;
                }
    }

    cleanChunks();
    WEATHER.addChunkArray(wc2);

}
我也试过了

 wc[1] = new WeatherChunk(world,x,y,(getHNChunkCat()-rand.nextInt(1)));

您调试得不够,因为这是不可能的。确实,您只会收到一个值,但它是
0
,而不是
1

发件人:

返回一个伪随机、均匀分布的int值,该值介于0(包括0)和指定值(独占)之间


如果你想要50%的机会,我建议你把它转换成
nextInt(2)
或者像@Flynn1179建议的那样:。

你想得到一个介于0和1之间的小数点吗?使用以下命令:

Math.random() // returns a random double

nextInt
方法仅返回介于0和指定参数之间的随机数,但不包括该参数。因此,您应该总是得到0。

nextInt(x)
返回
int
介于
0
包含和
x
排除之间的值。
nextInt
方法的参数是上参数。所以它是一个介于0和1之间的整数范围。它只返回0,从不返回1是的,我同意。我是从哪里来的?一个是排他性的。不需要
nexttint(2)
,只需使用
nextBoolean()
谢谢你,但我很确定我已经在另一个地方得到了同样的东西,时间来检查并修复所有事情。那一定是另一种情况,因为不可能按照你在问题中提出的方式来做。