java实现查找替换功能

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;
  }

替换下一处

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());
   }

来源：https://blog.csdn.net/cat_pp/article/details/50963397