import org.eclipse.jdt.internal.corext.ValidateEditException; //导入依赖的package包/类
/**
 * Applies an text edit to a compilation unit. Filed bug 117694 against jdt.core.
 *
 * @param cu the compilation unit to apply the edit to
 * @param edit the edit to apply
 * @param save is set, save the CU after the edit has been applied
 * @param monitor the progress monitor to use
 * @throws CoreException Thrown when the access to the CU failed
 * @throws ValidateEditException if validate edit fails
 */
public static void applyEdit(
    ICompilationUnit cu, TextEdit edit, boolean save, IProgressMonitor monitor)
    throws CoreException, ValidateEditException {
  IFile file = (IFile) cu.getResource();
  if (!save || !file.exists()) {
    cu.applyTextEdit(edit, monitor);
  } else {
    if (monitor == null) {
      monitor = new NullProgressMonitor();
    }
    monitor.beginTask(CorextMessages.JavaModelUtil_applyedit_operation, 2);
    try {
      //                IStatus status= Resources.makeCommittable(file, null);
      //                if (!status.isOK()) {
      //                    throw new ValidateEditException(status);
      //                }

      cu.applyTextEdit(edit, new SubProgressMonitor(monitor, 1));

      cu.save(new SubProgressMonitor(monitor, 1), true);
    } finally {
      monitor.done();
    }
  }
}
 

import org.eclipse.jdt.internal.corext.ValidateEditException; //导入依赖的package包/类
private static void applyEdit(ICompilationUnit cu, TextEdit edit, boolean save, IProgressMonitor monitor)
    throws CoreException, ValidateEditException {
  IFile file = (IFile) cu.getResource();
  if (!save || !file.exists()) {
    cu.applyTextEdit(edit, monitor);
  } else {
    if (monitor == null) {
      monitor = new NullProgressMonitor();
    }
    monitor.beginTask(CorextMessages.JavaModelUtil_applyedit_operation, 2);
    try {
      IStatus status = Resources.makeCommittable(file, null);
      if (!status.isOK()) {
        throw new ValidateEditException(status);
      }

      cu.applyTextEdit(edit, SubMonitor.convert(monitor, 1));

      cu.save(SubMonitor.convert(monitor, 1), true);
    } finally {
      monitor.done();
    }
  }
}
 

import org.eclipse.jdt.internal.corext.ValidateEditException; //导入依赖的package包/类
/**
 * Applies an text edit to a compilation unit. Filed bug 117694 against jdt.core.
 * 	@param cu the compilation unit to apply the edit to
 * 	@param edit the edit to apply
 * @param save is set, save the CU after the edit has been applied
 * @param monitor the progress monitor to use
 * @throws CoreException Thrown when the access to the CU failed
 * @throws ValidateEditException if validate edit fails
 */
public static void applyEdit(ICompilationUnit cu, TextEdit edit, boolean save, IProgressMonitor monitor) throws CoreException, ValidateEditException {
	IFile file= (IFile) cu.getResource();
	if (!save || !file.exists()) {
		cu.applyTextEdit(edit, monitor);
	} else {
		if (monitor == null) {
			monitor= new NullProgressMonitor();
		}
		monitor.beginTask(CorextMessages.JavaModelUtil_applyedit_operation, 2);
		try {
			IStatus status= Resources.makeCommittable(file, null);
			if (!status.isOK()) {
				throw new ValidateEditException(status);
			}

			cu.applyTextEdit(edit, new SubProgressMonitor(monitor, 1));

			cu.save(new SubProgressMonitor(monitor, 1), true);
		} finally {
			monitor.done();
		}
	}
}