public?class?Compare?{
????public?static?void?main(String[]?args){
????????char[]?c1?=?new?char[]{'a',?'b',?'d',?'d'};
????????char[]?c2?=?new?char[]{'a',?'c',?'c',?'d'};
????????boolean?isFinished?=?false;
????????for(int?i?=?0;i?<?c1.length;i++){
????????????if(c1[i]?>?c2[i]){
????????????????System.out.println("c1?is?bigger.");
????????????????isFinished?=?true;
????????????????break;
????????????}else?if(c1[i]?<?c2[i]){
????????????????System.out.println("c2?is?bigger.");
????????????????isFinished?=?true;
????????????????break;
????????????}
????????}
????????if(!isFinished){
????????????System.out.println("c1?is?the?same?as?c2.");
????????}
????}
}

不清楚你所謂的比較是什么意思，可以用for循環(huán)遍歷char數(shù)組取出每個(gè)char數(shù)組的元素，然后對(duì)它操作

char?c[]?=?new?char[5]?;
//char數(shù)組c的賦值操作...
for(int?i?=?0;?i<c.length;?i++){
????c[i]?//比較操作...
}