java实现查找替换功能

POOPE

本文实例为大家分享了java实现查找替换功能的具体代码，供大家参考，具体内容如下
查找

if(searchtxt.gettext().equals("")){
      joptionpane.showmessagedialog(null, "查找内容不能为空！");
    }else if(!searchtxt.gettext().equals("")){
      //searchdialog.dispose();
      if(filechoose.focus == 1){
      filechoose.tp1.requestfocus(true);
      str = filechoose.tp1.gettext();
      startposition = str.indexof(searchtxt.gettext());
      endposition = startposition + searchtxt.gettext().length();
      filechoose.tp1.select(startposition, endposition);
      newendposition = endposition;
      }else if(filechoose.focus == 2){
      filechoose.tp2.requestfocus(true);
      str = filechoose.tp2.gettext();
      startposition = str.indexof(searchtxt.gettext());
      endposition = startposition + searchtxt.gettext().length();
      filechoose.tp2.select(startposition, endposition);
      newendposition = endposition;
      }
   }

查找下一处

nexttemp = newendposition;
    if(filechoose.focus == 1){
      strall = filechoose.tp1.gettext();
      filechoose.tp1.select(nexttemp, strall.length());//选中所有未查找的字符串
      nextstr = filechoose.tp1.getselectedtext();
      newstartposition = nextstr.indexof(searchtxt.gettext()) + nexttemp;//在未查找的字符串中查找对应字符在tp1中的位置
      newendposition = newstartposition + searchtxt.gettext().length();
      filechoose.tp1.select(newstartposition, newendposition);//找到文本，选择文本
    }else if(filechoose.focus == 2){
      strall = filechoose.tp2.gettext();
      filechoose.tp2.select(nexttemp, strall.length());//选中所有未查找的字符串
      nextstr = filechoose.tp2.getselectedtext();
      newstartposition = nextstr.indexof(searchtxt.gettext()) + nexttemp;//在未查找的字符串中查找对应字符在tp1中的位置
      newendposition = newstartposition + searchtxt.gettext().length();
      filechoose.tp2.select(newstartposition, newendposition);//找到文本，选择文本
  }

替换

if(filechoose.focus == 1){
      filechoose.tp1.requestfocus(true);
      str = filechoose.tp1.gettext();
      startposition = str.indexof(searchtxt.gettext());
      endposition = startposition + searchtxt.gettext().length();
      filechoose.tp1.replaceselection(replacetxt.gettext());
      newendposition = endposition;
    }else if(filechoose.focus == 2){
      filechoose.tp2.requestfocus(true);
      str = filechoose.tp2.gettext();
      startposition = str.indexof(searchtxt.gettext());
      endposition = startposition + searchtxt.gettext().length();
      filechoose.tp2.replaceselection(replacetxt.gettext());
      newendposition = endposition;
   }

替换一下处

if(filechoose.focus == 1){
      filechoose.tp1.requestfocus(true);
      nexttemp = newendposition;
      strall = filechoose.tp1.gettext();////////////////////////////////
      filechoose.tp1.select(nexttemp, strall.length());/////////////////////////////
      nextstr = filechoose.tp1.getselectedtext();
      newstartposition = nextstr.indexof(searchtxt.gettext()) + nexttemp;
      newendposition = newstartposition + searchtxt.gettext().length();
      filechoose.tp1.select(newstartposition, newendposition);
      filechoose.tp1.replaceselection(replacetxt.gettext());
    }else if(filechoose.focus == 2){
      filechoose.tp2.requestfocus(true);
      nexttemp = newendposition;
      strall = filechoose.tp2.gettext();
      filechoose.tp2.select(nexttemp,strall.length());
      nextstr = filechoose.tp2.getselectedtext();
      newstartposition = nextstr.indexof(searchtxt.gettext()) + nexttemp;
      newendposition =newstartposition + searchtxt.gettext().length();
      filechoose.tp2.select(newstartposition, newendposition);
      filechoose.tp2.replaceselection(replacetxt.gettext());
  }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。